you need to look at torque for clutches not bhp. A g40 clutch is probably good for up to around 150lb/ft without losing too much lifespan. Basically the more torque, the less time it's going to last. Much more than 150lb/ft and you'll be replacing it quite often. Also depends what you want to use the car for, road use is Ok but if you're going to be doing track days then you'll want a decent uprated clutch.
