I have the 1st generation ark exhaust or wjat is known as the grip. The best way for me to describe it is that the carnow sounds the way it should have been when it leaves the dealershil. Sounds like a true sportscar! My right side can hangs about a inch more than driverside, but it doesnt bother me. I think its a 10 out of 10 imho. Might be getting hfc's from ark in dec.