Cal

iTrader: (1)

Anybody know where to buy them? I want to build a custom exhaust, but 3.5" is the biggest I can find, and mostly 3.0 inch. I already have 3.0 inch system, so 3.5 doesn't seem worth the trouble, especially since I already have a 4" inlet/outlet muffler.

FAST LS1

iTrader: (2)

I'd check stainlessworks which is one of the sponsors to the right over there. If they don't have it I bet they could tell you where to get it.

Cal

iTrader: (1)

No, Stainlessworks doesn't have 4" stuff; they were the first ones I called. They cited not having the tooling to work with tubing that big as the reason. But I did finally find another place that sells it:
http://www.burnsstainless.com/index.htm
They sell the straight pipe as well as the bends, very impressive site.