McLeod sof-loc of if you can get the new piece from Cale Aronson through ACE I would use that. All that dual disc dual friction crap is just that. CRAP. A sintered iron disc is more than streetable, will last longer, use less base and counterweight and shift better.
I have had good luck with a few different styles of single disc, b&b/long style clutch setups. After talking to a few of the clutch manufacturers all of them recommended a multi-disc clutch with steel floaters for a street strip application. This really surprised me. My latest disc is ceramic puck on one side and organic on the other. They said I can get it pretty hot and it would live. If you have room for the hillbilly soft locker give it a shot. Be conservative, too much slip time and it's game over.
