I chose ACT over SPEC. Same price, about same rating. 6 pucks are little over 500ft/lb. I got street disk with HD pressure plate rated at 400ft/lb. (6 puck isn't my taste for a street car) It's heavy but it holds. SPEC is a local shop for me. I've seen both failure and success. If the clutch disk is made at Performance friction Material, It'll be a nice unit.