Is there a difference in fit between the 1-3/4" and the 1-3/8" (if those ar, which one would be better for my car? I think the larger ones would be best! Let me know.
Would I want to get them coated, or would it not matter because they are stainless steel?

Also is there anywhere cheaper than summit to get a Catco cat? Or is there a better cat than Catco?
Thanks,
Joe

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DEEP RED 87 IROC-Z
350, 5.7 TPI, auto
Few bolt on mods
-3" Flowmaster catback system
-Accel plugs, wires, and distributor cap
-MSD coil
-K&N Airfilters
-SLP Airfoil
-Brand new paint job
-Hypertech Thermomaster Power Chip
-Hypertech 160 degree thermostat
-Macewen white face overlays
-Xenon Blue bulbs from Macewen
More to come soon!!

 

I hear SLP can coat headders, Is it true and is it an alternative to Jet-Hot, or does it not even compair??

 

i think the sizes are 1 3/4 and 1 5/8 and all i can say is i have the 3/4 on my 1991 Z28 and they take a little away from the bottom end and add more to the top end if you plan on any major mods like heads,cam,ect. go with the 1 3/4 they are sweet!

 

Thanks for the help Flip!!!
Does anyone know a place to get Highflow cats any cheaper than Summit, or is there a different, better alternitive to a Catco??

 

I recomend you check out C & K cats

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87 Formula 350 13.94@96.67
98 Z28 1LE 13.15@107.59
1LE Owners Association

 

go with catco mine was 95 dollars brand new and it gutted itself in two days it's as free flowing as you will get!!!!!!!!!!!

DRIVE IT LIKE YOU STOLE IT!!!!!!!!!!!

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87 trans am 350 L98 aluminum heads,LT4 hot cam,slp runners,slp 1 5/8 headers,3in.y-pipe,edelbrock base,hi flo cat,air foil,afpr,as&m ported plenum,t-5 tranny w/centerforce clutch and a 3.27 9bolt(11.9in. brakes),ads strip chip,relocated iat sensor,tb bypass,hollowed maf,a/c delete(whole lotta room in there now)

14.10@97mph w/2.01 60'


slp catback tomorrow(7/13)ed wright's fastchip saturday!!!!