Should be able to use a flywheel for a 4.8 or 6.0 truck. Ive only found them at oriellys I think the part number is 1050 and it's only 50 bucks and the. Use a pilot bearing from an ls1 and a regular 12 in clutch. I should have prefaced this by saying that's what I'm doing with my 5.3 and sm465 but I believe it would work just fine with the nv4500. Hope this helps.