I've run Center Force clutches since they came out and just love them. Have one in my 73 W200 and my 72 Dart. Had them in several other cars too. Have to remove the over cam spring from the pedal assy. For me the only better clutch is the McLeod twin disc that I use behind higher HP motors.
My W200 with the popup camper, 64 gal of fuel, John boat and loaded up with gear and people weights in at around 8500#. Climbing over rocks and four wheeling I've abused the crap out of it and it has never failed.