The clutch transmits the engine power to the gearbox, it doesnt contribute any torque at all, it can only vary in the amount of slip before full contact is made and the engine and gearbox mainshaft are then turning at 1:1.
Sports clutches can take more torque without slipping, not give torque thats not there. A standard clutch in full contact will maybe take say 150bhp or 110lbs of torque applied by the engine, but 200bhp would make it slip, sports clutches slip at a higher torque figure if the engine can produce it, thats all.
If yours doesnt slip and you dont do 5k rpm launches from the traffic lights or drag strip runs, its a waste of money mate
Again - a sports clutch adds no power whatsoever. Its just stronger for use wi uprated motors.
