I am also the proud owner of a 2000 Intrepid R/T with a vibrating muffler that is about to drive me crazy. I'm anxious to put duals on it and want it to sound healthier but don't want it to sound like my race car. I initially thought of using a Flowmaster muffler but I read somewhere a member tried a 3 chamber Flowmaster and had to change it out because it was too loud...I REALLY want to do this only once..Can anyone help? Thanks in advance..Dave