2005 3.0i Clutch Capacity? Supercharger recommendations

Thinking of supercharging my 2005 Z4 3.0i, anyone know the capacity of the stock clutch? And any suggestions for upgrade, if needed?

Posted in the FI forum, but no responses, looking at the ESS twin screw kit, any advice?

Thanks in advance for any help.

2005 3.0i Clutch Capacity? Supercharger recommendations