I have a '01 GS-R coupe... I know that the 94+ LS exhausts will fit my car. I found a good deal on a used exhaust from a 94+ Ls and im thinking about buying it.. My question is: is there a difference in performance between an LS and a GS-R exhaust? I'm thinking no, since exhausts that come out now, the GS-R and 94-97LS exhausts have the same part #. i just wanted to make sure before i made my purchase..thanks..peace