got my dynomax super turbo installed on my 04 dc with the 3.4 v6. the guy cut out the old muffler and tail pipe, welded in the dynomax and new tail pipe and exhaust tip that i had left over from my dual setup i had on my previous v6. it only cost me $60 for the install.
my impression of the muffler.......i like it so far. its a rather quiet muffler(still love the flowmaster sound tho) and when you get into the throttle, it has a nice deep tone to it. its not all that aggressive either, and interior resonance isnt there really. i still gotta get out in the interstate and see how it sounds at higher rpms, but from what i can tell......gonna be a rather quiet muffler.also, it feels as if the acceleration is a tad better.........and i'll see about any mileage change later too. gonna put up pics and a sound clip later on........the wife has the camera at work with her.