Performing some extremely long overdue maintenance, have a couple ?'s

[TheRegulator]

been a member for a while but never really posted at all, just an intro thread, but now over this coming winter I want to get my truck actually rolling around to a point where I trust taking it anywhere, and figured I would start with maintenance.

I need to replace all the diff fluids, manual trans fluid, and T case fluid, but had a question there, what is everyone running in what, and how to I tell if my T case takes ATF or not, is there a certain number I should look at?

I also need to get the U Joints replaced, any preference there?

Alignment, and tires will be in the works also.

I do need an upper radiator hose, but cant seem to find one anywhere local, anyone point me into a direct fit. engine is the original 350 the truck came with