Well, I finally smoked the Centerforce D/F I had in the car. I just got done installing a Spec stage 5. Its grabby as hell, but I think its going to work out. I am very suprised at the light pedal on this! I thought something this bad-*** would be a workout! Its as light or lighter than the C/F. I was going to install a stage 5 with a stage 3 disk, but couldnt get one this way for a few weeks. Ill just have to get use to it on the street. Its not as smooth being a solid disk and all, but hey it wont let me down at the track either!