well i need to redo some of my exhaust soon. pretty much just an axle back set up. i just ordered my flowmaster 80 series muffler and i have my two 4th gen LT1 Z28 tips sitting here that will be going on it also. my reasons for picking flowmaster are because i had it on my previous car(1993 Grand Am GT with two 40 series.) and i loved the way it sounded. also seemed like a quality product so they are getting my business again. ordered from jegs. should have it by middle of next week.