I finally got drive my car this weekend with the new Bassani cat-back that I put on over the winter. Keep in mind that this is my first 4V mustang. Man, does that son of a bitch sound good at around 5k rpm! I still have the stock manifolds/H-pipe and there is absolutely no drone or vibration at any RPM. I can't seem to wipe the grin off my face. Man, I love this car!