How much different is the b13 cat-back from the b14? I mean, will a system designed for a b13 need major modification to fit a b14?

Not worth it.

They are competely different. The B14 exhaust goes over suspension, and the B13 goes through the middle of the control arms.

Originally posted by eric96ser
They are competely different. The B14 exhaust goes over suspension, and the B13 goes through the middle of the control arms.

Yeah, that's what I heard...ok guys, thanks.