So if I got a gsr swap a b18c (jdm), would a stock usdm gsr exhasut fit on it? Or is there differences? Need to know thanks.

 

all b series exhaust are interchangeable. It's the body type of the car that you need to worry about. From my experience of mixing and matching, 94-01 integra exhaust and 92-00 civic exhaust coupes share the same bends and match up. The integra axel back is a little longer and will not fit a civic hatch, but the rest of the piping does.