installing gears

Does the kit come with, pinion shims, crush sleeve, pinion nut?.....I'm sure it does, those are the neccesities. Other things you can have done at the same time are rebuild the trac-loc unit, rear end bearings, and so on.

Make sure whoever installs it puts Ford friction modifier in with the gear lube.
 
You should pick up wheel bearings and seals.You should replace them since the axles will be out and should add nothing to the price of install.The master rebuild should have the carrier and pinion bearings so with all bearings replaced she should spin with the least amount of resistance which is a good thing.