Well crap I hope they will let me return my aero turbine 2.5 or something if not there went 120 bucks
any exhaust shop should have adapters
or be able to flare the ends
exhaust diameters are 2.25, I just had a 18" magnaflow w/2.5" in/out put in yesterday, they just flared the end and welded it on
Meineke muffler told me they would charge me $100 put my Aero turbine muffler on.