i used an exedy stg 2 pp. with act 6 puck unsrpung disc, and 05 DC5 9.5lb chromoly flywheel. i'm going to go through the break in period of 250 miles before dumping it and what not, just to ensure the propper settling to ward off any slippage. but it feels similar to stock pedal effort with a nice little bite as you let out the clutch to remind you its a 6 puck unsprung disc. love it.