rig looks fawesome...
I still got the rear seat to get upholstered...still a lot of dash work and the interior side panels...Was the tire carrier still in the truck when you got it?
Yes it was! THank goodness...I would never have found an original...those are truly 73-74 ONLY! The 1975 went to the passenger side rear over by the gas inlet...at least that's the way it appears in the brochures I've seen
They are expensive to have a shop rebuild. On my dads old hunting truck which stayed in 4wd 90% of its life, he got tired of having to rebuild it so he just had a new driveline built that didnt have the double joint at the one end. So when it wore out he could just rebuild it like the rear driveline.

He's right. 3rd pic, the one on the right. Just needs a little tap-tap-taparoo to get the clip a bit deeper in the groove.
Those u-joints and CV ends can be done at home. Just typical u-joint tools and experience required.
Yep, depending on the driveshaft angle, you can sometimes get away with two standard joints instead of one CV joint.
BTW, that one keeper is not seated all the way.............
...and he did replace one part inside that big joint