The street disc isnt going to cut it. Your gonna need a 6-puck. I would recommend an ACT pressure plate and a south-bend disc (check on dsm tuners for more info on this) or a competition clutch or clutch masters clutch. I just killed my ACT HD with a 6 puck and that clutch is rated to hold 580 tq and I was only making in the high 4XX's tq and it couldnt handle it. That is also on an EVO clutch which is a bit larger than a normal 7 bolt clutch.
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