Hey guys , have the stock muffler rem e tips out from under car to limit noise in cabin. I used round chrome exhaust tips 3.5 " exhaust tips to a 3 inch main existing pipe srt6. Then i added a header silencer inside one exhaust tip to tune in the sound i perferred. Beware to use a size of pipe that a silerence will fit in. the silencer can be found on line are any race shop, . The silencer can be cut in half if you want to try different sounds. You should have no drone, lose 30 to 40 lbs of weight and the sc/ srt6 loves less restriction. Just another option.