how much Hp before a crankshaft support needed? im looking to run around 750 rear wheel.. with a 2.8 kenne bell. at what HP will a crank support be needed.. my big issue is i dont run the cobra accessory drive.. I run the 2001 accessory drive with the blower running right off the innovators dampner... so swapping all that crap over would suck...if i dont need to do it.. just get the balancer stud??