Well I am about to buy a Apexi WS2 for my 1994 Integra LS. Well I was lookin it over and there are two different part numbers for the 94-97 exhaust and the 98-01. This only effects me is that i have the 98-01 Bumper conversion. My question is the difference between the two exhaust the exit in the rear bumper of the piping length?? If anyone can tell me it would help out alot! Thanks