[Killer Bee]

off the top of my head, seems like 1 ton trucks from mid/late 70s had some popular robust axles and drivetrain components..

hopefully some guys that have done this will chime in with their build threads..

might have some luck searching through here and other 4x4 forums for build upgrades..

steel soldiers and other .mil vehicle sites might have some good reading for your research..

If I land on something I'll share, good luck!