I've used the NA style centerforce dual friction clutch to very good effect on a 240rwhp turbocharged 12a and a 230rwhp bridgeport NA, and it even managed to hold up to 315rwhp on a turbocharged bridgeport (although admittedly, I stopped streeting that setup after only a couple of weeks of driving it)... meanwhile, the clutch engagement is very smooth, and pedal pressure is near to stock.
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