I remember a thread like this but search is pwning me. Basically I am going to make a 3" y-pipe and a 3.5" cat-back. I need to find some type of universal kit I can cut/paste. So someone point me in the right direction so I can get to work!
I am thinking of using this.
http://www.flowmastermufflers.com/shop/index.php?main_page=product_info&cPath=1_228&products_id=4285
Purple hornies off the headers??
I have the og purple hornies still. Actually someone with an f-body building a race setup should take them. If anyone is interested they can have them in exchange for Kentucky Gregs.
dont wanna put down your project but 3.5" is overkill. for the motor you’re gonna have i would stick to 2.5" duals or a single 3". its easier to work with, easier to find, and will flow plenty.
I am sure you are only trying to help but this car will probably make around 600RWHP on the bottle so I would like to not restrict the exhaust just because something is a little easier to find. Hell I was considering 4" and still might. Do it right ONCE is how my build go.
So can someone please just show me a good place to get the universal kits for 3" and 3.5" I would even consider 4".
Kthanx
try this place.
3.5 isn’t over kill for his setup…
His last setup ran dumps directly off the headers 
i think cougerspeed should stop being such a fggt and just go 5 inch. :snky: gotta get ready for that turbo diesel sneakyness he has planned.
HAHA that link you gave me has builder kits that are exactly what I am looking for. However they only have 3" no 3.5" 
I need some of the 3.5" for the intake im building as well.
OH SNAP!
Although I think Newman will be very upset if I do not use stainless.
aluminized is for fggts…
Do it one with stainless and be done with it forever since I know you’ll be keeping the car for a long time. DO it right or do it twice.
or this … lol
HAHAHA I am looking for basically the same thing in stainless right now.
I have a bunch of 3" Mild steel (not sure if aluminized or not) U bends that i would let go for CHEAP
These are some awesome sites… I might have to re-do the M3 exhaust as I currently hate it.
I am calling Columbia River to see if they can make me and Ultimate Builder Kit in 3.5" stainless as soon as they open.
Great site!
Damn thats huge.
Look at a diesel truck shop.
Not going to lie as soon as I explode the ls1 I am sure I will build some type of stupid 427 or something that is why I am going so big. I would do 3" true dual or even 2.5" but it is just a nightmare on this car.
My 427 has true daul 3" 
Actually 1 7/8 primaries to 3" duals to quad 2.5".
I’m hoping to have the BMW go from dual 2.25" to a single 3" that sounds a little less ricie.