Ok this is for a 85 1/2 ton Chevrolet single cab long bed. If I wanted to do a 6in sky jackers lift(system from national tire and wheel) and 35-12.50-16.50 BFG MT's on MT Classic 2's with and SJ Nitro shocks what else would I need? I was told i need to agle the diff. with pinion angle adj. shims(I was told I had to make them also) would I need this? Is there anything else I would need? & Does it a good set up? Wheres the best place to order this stuff natioal tire and wheel?