Haven't had my Ram long enough to modify the exhaust, but I've had it on my 05 Dakota QC with the 4.7. I had a shop fab it up using a Flowmaster 3" in and dual 2.5" out, with tailpipes behind the wheels at a 45*...I went back a couple days later and had him put the upstream resonator back on. Sounded terrific at idle and up to about 60, then DRONE! Man...not pleasant inside from about 58-65...wide open sounded sweet though, especially through some tunnels!!!
If You Can't Beat Them...Arrange To Have Them Beaten.......George Carlin