Dynomax Super Turbo is deep on my 3.8L. If you get the RPMs just right, it will shake the rearview mirror. Ive also got 3 1/2" tips. It also sounds good at high RPMs. That was my major concern, not sounding too 4 cylinderish at WOT. Thats jsut my .02 worth, I think it sounds fine, and all my friends like it.

 

If you want sound, run the exhaust straight out of the pipe, with or with out the cat depending on where you live.