ok, 02 bonnie stock cat......i was thinking putting a 4" round magnaflow muffler in place of the resonator with 2 1/2in. inlet and outlet, and out the back with the 2 mufflers off and pipes replacing that and tips out the bumper. What do u guys think? I had that done on my old ford contour and it sounded good. But idk about the bonnie. Right now i have no res and 2 superturbo mufflers and i want a different sound. Let me know. THANKS

Series 2 L67'* go well into the 13'* on the quarter mile with stock exhaust behind the manifolds/headers.

I suggest you stay stock, buy headers, and maybe a downpipe and ignore everything behind that for now.

If you want a different sound go with aftermarket mufflers, but don't expect performance increases by changing anything from the Cat-back. Headers are about it, but worth it.