I have a 95 Eclipse GST and in the process of moding my car i decided that a new downpipe would be very beneficial. I plan on purchasing an 80mm exhaust and i cant find an 80mm downpipe to match it. Should i take the down pipe to a muffler shop and have the end of it stretched out to 80mm at the flange or what?? (keep in mind this downpipe will eliminate the cat)

 

You can get eh n1 exhuast and then the n1 downpipe then it will all fit.

 

if you're going apexi.. get the Front pipe.. its a down pipe with a test pipe too... all the way to the end of the cat.. replacing the cat. as long as where you are doesn't have strict emissions laws.. fire WILL come out!!