Mark,
Assuming its a small block in the 450 to 550 hp range, I like the centerforce dual friction, for me it had nice engagement with no chatter(cold or hot). Can handle the power nicely and doesnt feel like you need Arnold's leg to push it in. I think the centerforce 2 has organic frictions on both sides and may be a good choice as well. If you dont use there flywheel make sure the springs/center in the disk clear the flywheel bolts, some flywheels have a shallow pocket.
Rich
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