What's the state of tune on the engine? If its standard or just air filter exhaust, I'd go standard. If its highly modified or the car used in competition I'd look at fitting some sort of AP racing fast road clutch, maybe something like this>
http://www.demon-tweeks.co.uk/perfor...76nm-130-lb-ft
It all depends really on how much power you have and what the car is used for.