assuming you have dual in...then id go with the flowmaster 50 suv. great muffler and sounds comfortably loud. i have one on mine and i absolutly love it...real deep tone to it. unfortunatly it costs an arm and a leg but i found it cheaper than anywhere else (and i looked hard). they're called 21st Century Exhaust. now u can pay full retail for the dual in/dual out from flowmaster.com and there its like $168 i think. i got the dual in/single out which is retailed almost exactly the same as the dual out and i paid $90! add about $10 for s/h and thats still a steal. they dont have a website (idk why?) there # is 1-800-276-6399 and they're open like normal 9-5 hours or something. good luck!