I just bought a 97 Integra LS Sedan with only 22,000 original miles on it. The only thing wrong with it is the exhaust. I have been all over the internet and ebay looking for a replacement. All I seem to find is for the 2dr integras. I have found a few for the 4 door but I am interested in finding out what the difference is between the two and what exactly my options are for replacing my exhaust. I have seen some really nice cat back exhaust sytems on ebay but the are only for the 2dr models. I don't want to replace the exhaust with the OEM one, but would rather a good aftermarket system. Any help with this would be greatly appreiciated.