^? would a 2.5 inch one work with the stock header? i'm planning on getting a header in the future but want to get a good cat now. is there a cat that can work with stock and aftermarket header?

 

you could buy a 2.5 now, but it wont fit your stock header. u need a jdm one or custom header (smsp, hytech...) to fit the 2.5 cat. otherwise, a one that will fit your stock header will fit regular headers too.

 

ohh okay thanks

 

The largest cat you could get to fit the stock 2" collector would be a 2-1/4".