I have an AP at the moment and hasn't slipped at all. I have 280lbs torque at the hubs and my gearbox was fooked (as in really hard to turn, couldn't do it with just a CV cup) when this was measured. Clutch is 220mm too and not sintered.

Wishy, where's best to look at the AP clutches available and relevant torque capacities?

I've found that the 6 paddle and relevant pressure plate is only rated to 265 lbs.. that's over 100 less than the sachs non-sintered plate, and almost 200 less than the sachs sintered plate. Having said that the proof is one in use and if you say it did more then must be up to it but you don't know what torque you're running?

Found a cover assembly from AP, CP2394-46 which when used with CP2496-16 has a load capacity of 522 lbs. Plate is rigid 4 paddle so may vibrate like hell. However, unsure if this cover will fit so might need to phone them. drive plate has the right spline detail etc.

Might be horrific to drive with though!