I've run the ACT (stage 1) clutch in my D16Z6 and loved it! I ran this clutch for 7+ seasons and only replaced it when I re-shelled the car. The clutch and pressure plate I removed looked great and had plenty of life left. I'm now using the Centerforce clutch (from Jegs) and it just as good (or better, but I can't tell since it works great). No heat issues, no slip...