What clutch disc would you guys recommend. I have a 215mm kombi pressure plate with increased clamp force, although just before I broke everytooth off second, the clutch was slipping slightly at high revvs. The car has about 250hp at the wheels.
Thanks
Matt

I would not go any larger in clutch diameter.
If it was slipping then you need a better clutch, but make sure that the slippage was not due to some over-adjustment, due to a travel issue.
A clutch will slip only when it's torque capacity is exceeded.
This is why you can normally drive thru the slippage to a higher rpm level and the torque being lower at that point will have less slip.
Any how, only go to stronger clutch if you absolutely have to...perhaps just a freshen is all that you need.
The tranny also needs stronger gears, and probably a better blow-off valve to prevent boost spiking and thus torque spikes.