I want to put a dual looking exhaust setup on my 1993 Deville. What the newer Devilles look like, with a pipe on each side of the muffler. I've been told my the service rep. at Flowmaster, that for that look, I would have to get a 80 series muffler. I was hoping for a 50 series, becuase I have a 80 on my Z28 and it's almost too loud. I want the Caddy to have an agressive tone on accleration, but not all the time. Does anyone here run an 80 on their car? I was told a resonator would help a lot as far as the noise level went. Thanks for you help.