Ya I was just curious I put a super phat shaft 66, 8x.011 tips, smarty, intake and exhaust on the truck that hauls my puller around and the clutch held about 5 hard accelerations before it slipped. I'm guessin its pushin 400. Going to a southbend 3600 DD. Next will be drag comp, springs, studs, intercooler, and putting a s483 under the 66. Shooting for 650ish to the tires.