kcb37

I have an 89 RS, 305, T-5. The exhaust is shorty headers not sure who made them, they were on when I bought the car. The rest I had put on. Don't remeber what size the y pipe is, but the rest is 3 inch to the muffler in the stock location.

I am curious to know what your opinions are on which is better or if anyone has had any problems with either?

UMI Sales

Hello,
I see that you are interested UMI Performance! And are interested in our 3rd Gen boxed SFC's. They are only available in weld in only. Its a three piece set-up for the clearance of the exhaust. Below is a link to help you see what I am describing!

http://www.umiperformance.com/2400?category_id=113

If there is anything else I can help with feel free to ask!

Thanks Again,
Brad

BMR Sales

Just another option for you, we offer SFC for exhausts in and outside the frame rails.

BMR offers two versions for different exhaust combinations. Part Number SFC008 is designed for cars with full length headers and exhaust systems that run inside the frame rails. Part Number SFC009 is designed for cars equipped with the OE manifolds or shorty headers with OE exhaust or OE type exhaust that runs on the passenger side, outboard the subframe.

SFC008 Boxed Subframe Connectors for inside framerail exhaust

SFC009 Boxed Subframe Connectors for outside framerail exhaust

Link to the page if you would like to know more.
http://www.bmrfabrication.com/F3-chassis.htm

ditchbangr

iTrader: (1)

I have 2 camaros, 1 with the spohns and the other is a project getting paint that I installed the UMI's. I have already decided I like the UMI square tubing style sfc's for a couple reasons. They are really stout, square tubing make for a nice jacking point and they bolt through the lower control arm and weld to the torque box. HTH

UMI Sales

Hello,

We would like to thank you for being a Loyal UMI customer! And I am just glad that we could help! All you have to do is give us a call whenever your ready.

Thanks Again,

Brad

//<86TA>\\

iTrader: (14)

i think most people will say that they prefer a square/rectangular style connector as opposed to a round tubular one just because of the ease of welding.

bradley23150

iTrader: (10)

Yeah, considering how UMI doesnt seem to care when they get items shipped out, or care to mention things are on backorder, when it clearly states ''More than 10 available'' Ide go a different route. I ordered a set a week or more BEFORE Christmas, called, and was assured of a shipping date, when I waited, and Nothing came, I called again, and was assured a DIFFERENT date. I have yet to call again, but will shortly, I was planning on buying more items from them, but Will go with a different company. Many have ordered parts from them with, I assume, great service, etc. Ive had a different story. If I call again, and they tell me that they havent shipped them yet, or havent ''got them in'' than I will be asking for a refund.

Best of luck.

91_5.7_TPI

iTrader: (2)

I looked into this alot before I bought my SFCs. Heard good arguements for either item. Went with the Spohns in the end, but I don't know if it was the best choice or not. The Spohn are lighter and a great item. But I don't know if they resist the forces applied to them as well as the UMI... or they might do a better job. I'm not a structual engineer. Although, I think I know of someone at school who would know.
I do know that the Spohn's stiffened the car up and I don't worry about jacking the car up with the doors open anymore.

elano

iTrader: (2)

I want the UMI ones.

Saber

iTrader: (2)

As another option look at TDS they have Allstons, which are a different style then the Spohn, UMI, or BMR's.

racing geek

iTrader: (5)

I went with Spohn because they can easily be welded along the pinch weld (I think that's what it's called) and the floor. My other reasons were because I too heard they were lighter, and based on pictures I saw, it seemed as though the Spohn SFC tucked under the car better.

My cousin is a structural engineer. If someone can give me the dimensions of each companies SFC I'll see if he could look into it. Also, what specific material is each kind made out of.

Mike

Edit:
I now have the dimensions for Spohn and UMI SFC. Does anyone have info on other brands?

UMI Performance

Hello,

I am very sorry for the delay, we have been extremely backed up and still backed up from the busy holiday season. I don't think anyone would have you told we haven't gotten them in yet since we manufacture them at our facility? This item is a very popular item for us and we are having a awful time keeping them in stock to feel the demand.

If you could please PM me your name so I may find the order and make sure it has shipped for you. Again no one is telling you wrong dates on purpose, the shipping area and powder coat area are just overwhelmed at this time and aren't able to produce the items as fast as needed at this time... we are working on this issue but can't change it over night. I do insure you will be very happy with the item once you receive it.

Please PM me the order # or name so I can locate the order.

Thanks for the patience!
Ryan

91_5.7_TPI

iTrader: (2)

That's part of the reaso I went with them as well. See how nicely they fit?





You know, I have an couple extra cans of paint, so I'm taping and painting.

krisb410

iTrader: (9)

Well, I have the opposite. UMI has gone out of thier way in the past for me!!! UMI customer service gets an A+ from me. I have just about everything UMI offers for the 3rd gen.

kcb37

Not to keep adding to this, but as far as what you guys think of them installed neither one really sounds bad. I kinda like the way the sphon's tuck in. So I have another question, does anyone have a pic of UMI's.
I still have yet to look at the TDR or whatever was suggested earlier too.

Sould have mentioned this from the get go. (I always forget something)
Anyway. Still debating on a 383 or a 454. Either way it's not going to be a mild 383 and a 454 bored and stroked, well we all know that's a lot of power out of either.
For that reason I think I am leaning to UMI even if it dosen't tuck under as nice, seems like that's the stronger one from ya'll opinions.

I would also like to say thank you for your replies so far, and for anymore to come.

UMI Sales

Hello,

I seen that you wanted a pic of or 3rd Gen Boxed SFC's
http://www.umiperformance.com/2400?category_id=113

Thanks Again!
Brad

WIll36

iTrader: (12)

I have the alston/TDS sfcs on 2 cars. One set I installed the other came on the car. They definetly stiffen the car and made a big difference. Only down side is you have to chop up the mount on the sfc for the front passenger side to clear aftermarket x-members. Also they are hard to install, I think I'm going to go with a UMI set on the 91 Z I just picked up.

//<86TA>\\

iTrader: (14)

mine didnt even come close to my aftermarket crossmember, UMI.

they are hard to install, the ends are difficult to weld, i ended up cutting up the "cups" on the ends of the tubes so that they fit better and allowed for more ease in welding.