I just installed hooker long tubes and a mufflex y-pipe. I bought the system used and didnt know the collector at the end of the Y was 4 inch diameter. Are there 4 inch "catbacks" available? I havnt seen any other than custom muffler shop specials.

anyone here running 4 inch out the back? what muffler are you using?

 

Mufflex makes one of course. Just get a 4" to 3" reducer at Napa or something, that's what I did.

-Dustin-