ok again i have a 95 integra, and i put a 97 jdm type r b18c motor in it. i have gsr tanabe cat back exhaust, but the type r header and downpipe (a-pipe) is bigger so i cant use it. So i can i use a stock gsr header and stock gsr a-pipe? or will it be oo restrictive? please someone help

 

get an aftermarket header for b18c1 and get a cat for a gsr, that should bolt up to your tanabe exhaust...