Yes a sintered iron disc will chatter bad on the street because the hotter they get the grabber they get, when driving on the street you have to learn to just let it out do not try to slip it out. Hydraulic clutch linkage actually reacts slower then mechanical linkage, for a street car that goes to the track once in a while they work fine and are alot easier on the leg, but for best performance mechanical. Just don't expect good 60 foot times with a 2.66 first with out excessive clutch slip, and Centerforce DF don't like to be slip like that. They are a very harsh clutch, I always called them parts breaker clutches, they love to eat up driveline parts.
