Get a Flowmaster 50 and have them replace the piping to 2 1/4'' or 2 1/2'' Flowmaster 50s give a nice deep, throaty sound.... don't get Flowmaster 40s, cause the sound they produce are alot more whiny and are suitable for smaller import cars (like Civis, Accords, Sentras, etc.) Ask them also if they can do a custom dual exhaust when replacing the pipes. I had mine replaced with 2 1/2'' pipes with rear dual exhaust (go with rear not sides, they'll look cooler). My install 'caused me $410 here in Los Angeles, CA.