I picked up a 95 gt 5 speed, gt 40 heads, CIA, 2.5" dual exhaust with X pipe and tuned. It has 0 muffers or cats. It's obnoxious to drive, painful even. I want it to be quiet with a hint of rumble under hard acceleration, and with minimal restriction. I know nothing of mufflers, other then brand names, and of course everyone says theirs is the best. Looking for real world experiance