John...have you checked out Monster
http://www.monsterclutches.com/ Really good reviews on LS1Tech.com Pedal is supposed to feel like stock and they have them at different stages up to 900 hp.
__________________
Mike
Pro Touring 68 Acadian(Nova)
Speedtech subframe with high clearance control arms
Prodigy Bar rear suspension
Ridetech single adjustable coilovers
Wilwood 12.2" brakes
New Gen Splitters
LS3 and TKO600
Link to my build:
https://lateral-g.net/forums/showthread.php4?t=14349