I think you could get the most bang for your buck with toyota axles. They will most likely already have 4.10 gears, which should be ok for 35's with the sm420 (although 4.56 would be better). For lockers I would do one of two things, either go cheap and run Spartan lockers f&r, or go big and run selectable f&r. Not much middle ground. Detroits are somewhat stronger than lunchbox lockers, but performance and driving characteristics is about the same. A toyota rear axle shaft should be good with 35's, for the front you will need to get some old-school longfields or rcv's. And, can be converted to high steer without having to machine the knuckle (not sure if you would need that or not).
