AP do different rated pressure plates, the one that comes standard with the 4 paddle clutch is only rated by AP to 170 lbft........but it can cope with a lot more than that, I'm running well over 200bhp & lbft and mine has never slipped. The highest rated one ( CP3560-2 ) is rated to 230 lbft by AP but considering how much they 'underate' the clamping capabilities I would say that it could cope with quite a bit more than 230 lbft

HTH

Duncan