THIS IS my Frankenstein Dart Sport 400BB.Full 3 inch TTI with "H" pipe and the quietest Dynomax mufflers TTI sells. This was a second gear shifting to high as I didn't want to scar the driveway for life...It gives everyone idle and about 4 to 4,500 rpm sound. This engine will rev to 7K no problem and has a huge cam. It has zero drone with this cam.