My 91 Z28 build. 17 years in the making... Finally going to do this right
 

I bought this car when I was 16. I attempted to build it up during my early years in college and frankly, I did a horrible job. I was teaching myself everything about cars as I was building the car. Not very well I guess. I could go on for a long time telling tales of why I did this or that. Mostly all bad ideas.

I got married, bought a house, got a new job and finally have the resources and time to do this right, so lets get to it.

Here is a pic of the car back when it was 100% stock, in 2000.
http://carphotos.cardomain.com/ride_..._large.jpg?v=0

Fast forward to 2005, a forged 383, T56, Moser 12 bolt, paint, shaved locks, shaved antenna, shaved gas door, ZR1s, C5 brakes, 6 point, etc.....
http://carphotos.cardomain.com/ride_..._large.jpg?v=0

Needless to say the car looked OK, but was put together horribly. 100% my fault.

New build and time to to a better job.

I started by ripping the car apart.
The first thing I wanted to address was a smoother looking engine bay. I realized I wanted to do this because I liked to go to car shows after the fist build.

Here you can see my first pass after cutting up the mounting points and welding the strut towers.
http://i1320.photobucket.com/albums/...pszytgu7vr.jpg

Battery tray and side wall.
Attachment 316156

Firewall and towers after some filler.
Attachment 316157

I am not very happy with the work I did so far so I think I am going to grind off the filler and start over on the towers and some of the side panels. Before I do that I decided to get to work on some minitubs. These are the 4th gen wolfe kit.

Here is the first cuts I did.
Attachment 316158

Attachment 316159

Test fitting.
Attachment 316160

Tack welded.
Attachment 316161

Final welded from the inside of the car.
Attachment 316162

Passenger side first cut.
Attachment 316163

First cut
Attachment 316164

I am doing this to try and fit C7 ZO6 rims with air ride bag over shocks. This is why I am not removing more material for a deeper tub.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

I shaved the gas cap off so I could no longer use a stock tank, something I decided to do back when I was 17. If I could do it again, I may not have bothered, but here we are.

Here is a pic of how the cell was setup back when I was a kid.
http://carphotos.cardomain.com/ride_..._large.jpg?v=0

Then it evolved into a bigger change to the trunk to make it "safer".
http://carphotos.cardomain.com/ride_...iginal.jpg?v=0

Now I decided that this was not safe at all and I wanted to mount a new cell outside the car. Time to cut out all the bad ideas.
http://i1320.photobucket.com/albums/...pspqfiyqwy.jpg

Here is the new idea to change the shape of the trunk to hold the cell.
Attachment 316148

Major fab done.
Attachment 316149

To hold the cell I thought I would use the mounting feet. (bad idea #1).
Attachment 316150

Second idea. Straps to help hold the weight. (bad idea #2).
Attachment 316151

From some advice I found on TGO, I decided to make a frame to hold the cell that I can bolt to the body directly.
Attachment 316152

To install the cell into the frame it will have a removable floor.
Attachment 316153

Here is the frame getting ready for paint. All edges being ground down.
Attachment 316154

Here is the trap door to be able to access the cell.
Attachment 316155

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Gonna sort of jump around now since this is all I have pics of in an attempt to get the build thread up to date asap.

Here is the finished fuel cell frame.
Attachment 316136

Here is the passenger side tub being "massaged" to fit right. I am no fabricator. The frame will be added back around the spring pocket after I get the air ride bag shocks.
Attachment 316137

Tubs and cell with seam sealer from Eastwood. Great product.
Attachment 316138

Coating the inside of the floor with rust inhibiting paint. I am going to start from tail lights and work my way to the engine bay.
Attachment 316139

Back when I was a kid I did some HORRIBLE patch work. I decided to cut it all out and start over. Here is what it looks like with all the junk work cut out.
Attachment 316140

A bit further back.
Attachment 316141

Driver side from the outside.
Attachment 316142

Starting to rebuild with small pieces to form the missing panels.
Attachment 316143

Driver side shot from the outside.
Attachment 316144

Some shots of the passenger side mess.
Attachment 316145

Attachment 316146

Attachment 316147

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Here is the driver side all junk cut out and ready to be rebuilt.
Attachment 316126

Tangent. The aftermath of wire wheeling all the undercoating off the driver side wheel tub.
Attachment 316127

Fixing the thinker suspension mount metal under the floor.
Attachment 316128

After spraying with zinc phosphate to convert any rust.
Attachment 316129

First patch test fit and ready to go in.
Attachment 316130

Painted everything with weld thru primer for the placed that I can't get to later.
Attachment 316131

Patch welded in.
Attachment 316132

Wire wheeled.
Attachment 316133

After grinding.
Attachment 316134

Next piece getting mocked up with cardboard.
Attachment 316135

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Mock up from below.
Attachment 316116

Panel formed and ready to go in.
Attachment 316117

Trial fit #20. Really trying to adjust to make it fit as good as possible.
Attachment 316118

Shot from below.
Attachment 316119

Welded in.
Attachment 316120

From below.
Attachment 316121

Next panel in cardboard.
Attachment 316122

Area prepped and ready for welding.
Attachment 316123

Trial fitting just about done.
Attachment 316124

Welded in.
Attachment 316125

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Here is the last piece for the driver side going in.
Attachment 316113

Full shot of the whole driver side.
Attachment 316114

Attachment 316115

Thats all for now. Hope to have updates wrapping up the floor metal work over the next week.

Dealing with a few blizzards these days.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Glad you haven't given up on the old girl, and are taking the time to fix your learning curve. I have always liked your car, so I'm excited to see what you come up with.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Nice! I used to have one that looked just like it I sold it in 2001 and recently found it parked behind a house. I think I may try to buy it back.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

BADNBLK: Thanks! That means a lot coming from someone who has such a beautiful car.
This build will be the final build of this car so I imagine it will take a LOT longer than before. But I am exited to have a well built car for once.

dmccain: Go buy that car back!

This is the first car I ever owned. Drove it all thru my high school years. I am only on my 3rd car ever, my 13 Camaro. Had a Grand Prix GXP for a bit before this. Either way we can tell I like to hold on to my cars. I want to keep this for the rest of my life. Been 17 years already!

Now that I am up to date with my updates, I will try to post updates here every couple of days. It will help keep me motivated.

Thanks again for checking it out!

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

I like your setup with the fuel cell, at some point in life I want to move my tank in a similar manner, I think this would really free up space to run true 3" exhaust over the axle. (well this and me going to a watts link)

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Yeah, the Watts links look really promising. Just a lot of cost to absorb if you are not going to autocross. (I think).

Thanks for checking out the build.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Now with the DS patches all in, I decided to spend the night doing some detail work. Welding in a small patch to cap off the seat mount and grind all my old welds.

Open seat mount that needs to be closed off.
Attachment 316089

I was going to make it span back to the rocker, but figured why make things harder on myself for minimal, if any gains.
Attachment 316090

Horrible picture, but here is can see it all cleaned up and ground down. Path installed as well.
Attachment 316091

Time to move onto the PS.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Did a bit of work on the passenger side last night.

Here you can see the size of the hole left from cutting out my horrid patch job from before. I think sprayed some weld thru primer after wire wheeling the entire area as much as possible.
Attachment 316062

Patch being sized up to close the hole. Just about there.
Attachment 316063

Welded in.
Attachment 316064

Cleaned up a bit with a wire brush. Not ground down yet.
Attachment 316065

Hole on the inside of the car floor, PS.
Attachment 316066

Patch test fitting.
Attachment 316066

Welded in, wire wheeled, and ground down. No more seeing the ground!
Attachment 316068

Last hole on the PS. Didn't get around to closing it up, but almost.
Goes into that void where the wheel well, PS floor and frame all come together. The outer wall was gone.
Attachment 316069

Strangest patch I have ever made. Curved in a few different ways and a small tab on it. Should weld in easy.
Attachment 316070

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Tons of work over the weekend, but just a minor update on here.

I decided that since I was done with the patches on the floor, the next logical step is to see if the floor boards had any other issues lingering underneath the old POR-15.

Time to wire wheel the entire floor. This also will revealed small pinholes that I can weld shut as well as gave the floor a bit of texture so the new Eastwood coating would have something better to bite into.

First is a pic of the strange corner that needed closing.
Attachment 315944

Next you can see a couple shots of the floor after about 2 hours of wire wheeling.... I want to do this under the car as well, that will truley be a nightmare job. But worth it knowing that I have had eyes on every single nook and cranny.
Attachment 315945

Other side
Attachment 315946

Hope to do touch up welding tonight, then start wiping down the interior floor and painting the floor. Also injecting paint into the running boards to seal them up from the inside with internal frame paint from Eastwood.

I am sure I will find some problem areas when stripping the floor from under the car, but I don't want to leave metal bare for too long.

I think touch ups on the inside are an inevitability.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

since effectively the watts link just keeps the rear centered, it can be effective in any type of racing from Drag, to Auto x to road course. Looks like it is coming along great, keep up the good work!

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

The fuelcell looks great.
I saw the pictures where you had the the rusty metal cut out of the floor boards along the door and I instantly thought you were going to make some Hellaciously awesome subframe connectors like DSE has done. Will you be adding and subframe connectors on the perimeter? Only make your own inner set if you can get the metal cheap and have lots of time to spend on them. It took me the better part of two whole days to do my set what with all the measuring the length, cut, measure the angle, cut, grind weld. Repeat a dozen times per side.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Hey Tibo.

For SFC I will be using BMR outers combined with a 4 point bar. If i knew about DSE units back in the day, i would have planned the build around them...

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

OK, so now that the major metal patch work has been complete on the rockers and the floor, I wanted to get things sealed up quick.

Before I started to use the internal frame coating that I got from Eastwood, I wanted to clean out the rear frame as much as possible. I took the first two pics after I have taped a wire brush to a ruler and went to town and vacuumed out what I could.

DS
Attachment 315810

PS
Attachment 315811

I then made a custom tool that is a cable with a few small chain links on the end. Guys who restore old trucks and jeeps use this method to get rust out of frames.

After using the tool, more rust became loose. To do a good cleaning I taped a fuel line to my shop vac. This made it so I was able to clean out the frame very well.

DS
Attachment 315812

PS
Attachment 315813

Right after shooting the coating in. Make sure to put cardboard down under the area being coated. This stuff dries supper hard and creeps into cracks (both good things).

DS
Attachment 315814

PS
Attachment 315815

12 hours later once completely dry. Still on the fence about needing a second coat.

DS
Attachment 315816

PS
Attachment 315817

I used the same spray in the front frame. Back then I was still being stupid and didn't vacuum well and I didn't know about the custom wire tool. So rust flakes and scale are entrapped in the front frame rails. Oh well. This car will be garage kept from now on and not driven in the rain unless I get caught in it after a show. I think it will be OK.

Oh I also sprayed this stuff in the seat mounting rails. I figured why not.

Next update will be in a week. Family visiting.

I hope to start working on the fender horns that I hacked up as a kid back when I mounted the "sweet" lambo door hinges I thought were cool for some reason. Also small final touches on the interior floor.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Wow...thanks for posting this. I loved the idea of the Eastwood internal frame coating, but had my doubts about how well that applicator worked. Kevin Tetz did a demo of it, spraying it into a clear tube. The coverage was good, but the to be was small diameter, and an equal distance form the nozzle all around. I wasn't sure about the coverage in a rectangular frame rail. But this proves that it really does do a nice job.

If you have the product, I'd do a second coat. Now's the time.

I'll be saving these photos for reference.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

No problem. Happy to help.

After more thinking, i will do a second coat.

I bought 3 cans, used 1.5 doing what i described above.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Second coat complete on the rear frame rails. Hard to tell where you already coated, so I kinda just spray like crazy in there and hope for the best. Looks like full coverage to me.

Driver side:
Attachment 315648

Passenger side:
Attachment 315649

Decided to take a quick shot down the front frame rails as well to show how they are coated. This is after a quick second coat.

Driver side (I think):
Attachment 315650

Passenger side. That drip is actually bondo I think from filling holes in the engine bay, but I am not really sure.
Attachment 315651

I also sprayed down every bolt hole to try an ensure that I got full coverage. Just pinched the sprayer to try and contain the blast. All that paint will be getting sanded off before paint anyways, so no need to worry about spills now.
Attachment 315652

Decided that the next step should be to get some of this bare metal painted so it doesn't start to build up surface rust. Wiped down with PRE (pre-painting prep spray from Eastwood).
Attachment 315653

Coated with Rust Encapsulation paint from Eastwood. Applied with a brush.
Attachment 315654

Next step will be to finish cleaning the dash, weld, grind, wire wheel, etc... till it is all good metal, then repeat what I just did. Hope to do this all this week.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Looking good!

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Thanks! Slow and steady wins the race...

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Looks good. Take your time with it and dont cut corners.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

I think you are on the right track this time around.....

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Finally got around to removing the Dynamat glue residue from the dash area. Man that sucked. Not sure what I am going to use once I repaint the entire cabin, but hopefully I can find something that is not sticky, but rather is held on by some mechanical means. As you can see I still have some cleanup to do on the firewall area. What a mess...

Attachment 315459

Onto the next issue.

The complete mess my fender horns were.
Passenger side.
Attachment 315460

I decided to start the rebuild of the driver side first. Already cut off some crap metal I had added a while back. Staring to asses how to tackle this issue. By the way this was all done because I had added universal fit lambo door hinges back in the day that I later got rid of... Stupid idea.

Attachment 315461

Test fitting first piece to be made. All about getting the cardboard just right.

Attachment 315462

Area cleaned up and ready for metal.
Attachment 315463

Cardboard pattern transferred to metal.
Attachment 315464

Welded in.
Attachment 315465
Attachment 315466

Next issue was a small rust hole just below this area that went into the foot well area.

Rust cut out.
Attachment 315467

This time I made the template out of duct tape. Here I am transferring it to metal.
Attachment 315468

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Now that the rust hole was patched I could move onto making the rest of the fender horn from cardboard.

Attachment 315450

Including small slivers under the horn that were super fun.

Attachment 315451

Boxing off the lower area.

Attachment 315452

Always start with the most annoying parts... That sliver welded in.

Attachment 315453

Oddly shaped hole at the leading edge.

Attachment 315454

Small patch piece.

Attachment 315455

Welded in.

Attachment 315456

Next piece welded in. This was a big step as the rest is much more straight forward.

Attachment 315457

A shot of the reconstructed area from below.

Attachment 315458

Next should be the other cardboard pieces shown before, then onto the passenger side.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Got the final 2 panels attached.

Drilled a hole in the middle to be able to paint inside later.
Attachment 315235

Attachment 315236


Shot from below.
Attachment 315237

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

That's a lot of work. Any more welding work to do on the car?

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Yeah, the passenger side has the same issues to be resolved . Then the 4 point and the SFC.

then welding should be complete...

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

I always like the threads of long-time owners. Pretty impressive all the things you're able to do. This is going to be a really nice car when you're done. :)

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Subscribed... I am going to be redoing my first car as well. Luckily I didn't do any real cutting or anything, but there is a good bit of wiring I need to redo and paint/body work. Keep it up! It's looking good!

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

this is why I never drove mine on a wet street or in the rain...would hate to even think about fixing weather age...I was shocked at all the dust under the no see them places when I started pulling mine apart....keep up the good work..

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Thanks for taking a look everyone.

70% Off what I am fixing is from me doing stupid things to the car as a teen. (Lambo door hinges) Only the floor board repair and a couple small areas were rust fixes. The rest was botched crap.

anyways, hope to keep this thread updated

On the planning side of things, I decided to make a big shift. I will be selling my motor, clutch and trans... going to go with something reliable, f.i., and powerful. New GM Connect & Cruise LSA with manual trans.

Not cheap to say the least, but in the end, I think this it is the setup I will enjoy 20 years from now. I am looking at it in terms of a long investment. (I know there are cheaper ways to make the same power)

I just decided I want everything new on this build once its done, and I don't want to re invent the wheel. Chevy makes powerfull turn key setups, just need to save up. A lot.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

good luck looks good doing the same with my 87

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Will you be going with a rack and pinion setup? Not to egg you on but the money you'll already have in it this it's kind of like, meh, ok I'll do it.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Hey Tibo, I hadn't thought of going rack and pinion. You are right about the money. I just want what is best for the car at this point. If it adds another couple grand I don't care, I will just save for longer.

I have never seen an easy to install setup. Plenty of manual racks, but I want PS.

If you have seen straight forward kits, please send a link. I will try to post some progress pics. Its been a while. I have taken a few picks but since the weather has been great I have been riding my motorcycle a lot and swimming!

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Here is a mess of update pictures.

Found some rust in the cowl drainage area on the passenger side, under the OEM seam sealer. This was after I scrapped it all up and wire brushed what I could.
https://c1.staticflickr.com/5/4327/3...8cfaa443_z.jpg

After using zinc phosphate rust conversion, pre painting prep to clean and rust encapsulating paint. 3 coats. Not pretty but confident that it is sealed.
https://c1.staticflickr.com/5/4297/3...4bb2df2c_z.jpg

The piece of metal just above this area was also toast, see image before last. New seam sealer applied as well as patch panel being test fit into area that was destroyed (by me back in the day, ugh...) On the left you can see the fender "bump" rebuilt as well.
https://c1.staticflickr.com/5/4330/3...3f6aa802_z.jpg

Patch welded in, top was hard since the edge went in and out a couple times. Grinding to follow.
https://c1.staticflickr.com/5/4328/3...c826a343_z.jpg

First piece of fender horn rebuild. The hardest piece for sure due to the bend and strange welding angles needed.
https://c1.staticflickr.com/5/4309/3...8640e56e_z.jpg
https://c1.staticflickr.com/5/4309/3...63a2efdc_z.jpg

Larger lower piece tacked in. Drain hole also drilled.
https://c1.staticflickr.com/5/4296/3...ae15886e_z.jpg
https://c1.staticflickr.com/5/4300/3...7721fafe_z.jpg

Only two more pieces to go then this side should be complete and ready for paint. Light at the end of the body rebuild tunnel... I think...

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Test complete. Using Flickr.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Turns out Amazon Prime Photos and Photobucket don't allow third party hosting of images. Not sure what I am going to do...

I will try using Imgur, Photobucket is dead to me. Amazon Prime photos is only good for backing up images, not for posting on blogs like this.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

I switched to Flickr. It's truly deplorable what photobucket did. I hope the company goes belly up.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

I'm loving Flickr. Wish I had switched 10 years ago.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

I have been trying to use Imgur, but it is strange.... I will check out Flickr now.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

I find it pretty friendly to use. And MUCH faster than the Bucket. With 1/20th the ads.

I did a little tutorial on it. I'm far from all knowing on how to use their tools, but this is what I came up with.

http://wichargerguy.proboards.com/th...-photos-flickr

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

OK so I uploaded a ton of pics to Flickr.

I will try to go back up thru the build and correct posts, but that is a TON of work, so maybe a little at a time.

I had paper thin metal under some paint bubbles on my passenger side A pillar so I cut the area out and cleaned out all the rust.
https://c1.staticflickr.com/5/4317/3...3c94eebd_z.jpg

Here I sanded and welder primed the entire area.
https://c1.staticflickr.com/5/4314/3...cab40672_z.jpg

Test piece fit in place. Also primed with weld thru primer.
https://c1.staticflickr.com/5/4313/3...170f271f_z.jpg

Welding complete on the A-pillar patch. All spot welds done over the course of a couple weeks. Just did a dot every time I walked by! Time to start grinding and sanding to form the steel.
https://c1.staticflickr.com/5/4317/3...8bbeedb5c2.jpg

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Finished the passenger side fender horn rebuild. I forgot to extend the last panel down to form the lip the front section has. I did this on the driver side. Oh well. I could weld a lip on, but I don't think this is worth it.
https://c1.staticflickr.com/5/4303/3...26d2ca0d_z.jpg

Shot of the underside of the finished area. Grinding and paint to follow.
https://c1.staticflickr.com/5/4302/3...8b361148_z.jpg

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Further update to the A-pillar repair. Did some more grinding to shape the metal.
https://c1.staticflickr.com/5/4316/3...76eb278e_z.jpg

https://c1.staticflickr.com/5/4297/3...81ed2666_z.jpg

Next up is to close some holes I made on the cowl lip. Once I have done that I will be stripping the PS wheel well and getting to work on the other nooks and crannies of the engine bay to get the cowl forward ready for epoxy primer. Any suggestions?

https://c1.staticflickr.com/5/4329/3...a2718d9e_z.jpg

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

That metal in and around the cowl is extremely thin. I was able to MIG it but it was very difficult. I heavily recommend using a copper backing plate and to use a TIG if at all possible. The metal there, I measured it but I cant recall, must be 22 gauge. Being 22 it will also heat up and can warp easily if you aren't conscious of heat input with power tools.

A note on Epoxy primers that most don't know or think is BS... Do not apply body filler directly over epoxy. The filler needs to go on primer surfacer. The filler will only bond with the epoxy primer by adhesion so you have to scuff the heck out of it with like 80 grit. Only think of Epoxy primer as heavy duty sealer.

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Great advice Tibo. Can I do my bondo work on bare steel and then use epoxy and then surfacer?

or is best course of action, steel, epoxy, surfacer, bondo, primer (surfacer again?), paint?

Re: My 91 Z28 build. 17 years in the making... Finally going to do this right
 

Best way is what you said. Metal, epoxy, 2K, filler, 2K. You can spray Epoxy over the filler BUT you may notice that the filler wants to almost absorb the thin epoxy primer and will require two coats vs usually one with a good 2K. Some of the better fillers are direct to metal like the Evercoat Rage series which I cannot say enough good things about Evercoat Rage Ultra! It sands so wonderfully. The Bondo brand and even Evercoat Lite Weight filler sand like concrete compared to the Rage ultra. With the Rage Ultra I really only had pinholes if I really stirred the filler when mixing it or when I wiped the area multiple times with the spatula. You can also sand the rage really thin, to the point of being translucent and it will still adhere.