Ok, so I picked up some 2.8 V6 headers that seem to fit and look nice on my Firebird but, the next problem was running them to a y-pipe. Eventually I want to take out my cat so I will be able to run it straight to the muffler and out the back (duals). I picked up these headers with collecters already on them and their outley looks about 3 inches and my exhaust under the car is 2 1/4. Can anybody link me to a y-pipe that would fit? or any ideas what to do?

 

and they are longtube headers

 

If nothing else comes up from the aftermarket, any exhaust shop that is even remotely competent could build you a Y pipe for your application.

 

I would have to build it myself, fluk spending $200 on a y-pipe when I could make it for maybe $50