Ive got a 6-puck Competition clutch in mine and I love it!
http://www.maperformance.com/store/p...cat=457&page=1
I did the restricter remove mod and its light as hell! absolutely no clutch chatter.
I have owned dsms with the act 2100 (great cluch for stock power), act 2600 w/organic disk(best combo ever), and a act 2600w/sprung 6-puck (chattery, but awesome slip-launches!)