I have been searching and am having a hard time locating some info..I was wondering if there was a link or a previous post that might list all the OEM exhausts and what cars they might fit onto? I have seen other people modify or use a stock exhaust from another Honda on their cars. Would there be any performance gains? Are the cat back exhuasts from different models any larger in diameter inlet, outlet, etc?
This is something I have been thinking about especially since I went to the junkyard last week. Thought maybe I could hi-jack an exhaust from a civic and with little modification (crossed fingers), I could make it work?
I have a 92 Integra LS and my cat and exhaust are old and need replacing but I don't really have the money to get a $200 or more exhaust system.

 

the only one that might be worth an upgrade is an ITR exhaust which is still restrictive. and it wont fit directly onto your DA either. i dont know what size the '92-93 gsr exhausts are but if they are a bit larger in diameter than there you go. good luck finding that though.