I am looking for a new clutch for my car that will be making between 600-700rwhp. I was told by the guy who previously tuned my car (Jeff Evans from Evans tuning) that I should get a twin disc to hold that kind of power. I am running a 7mgte with a r-154 transmission and plan to drive it primarily on the street so I am looking for something that will have good drivability. a few that I was looking at were the clutch master fx850 the os giken twin disc and I have also hear that the RPS max single disc with a fidanza flywheel can hold a good amount of power. i would like to know what clutch any or you out there with high horsepower car are running and how they are on the street.