Quote Originally Posted by mugen24 View Post
im not sure, i think is 2.25'. if it's 2.25, can i put in a 2.5' cat?
It's possible but find out the collector/outlet size and go from there.
If it's a decent 4-1 header it should be 2.5.
If it is,may as well do the rest in 2.5 as others have said.
Straight thru b pipe muffler and the twin loop.Will be nice