Got my new driveshafts from High Angle (which look like high quality stuff by the way, thx Jesse) for my bro's 77 Jimmy. We got a 1350 rear as we are planning on eventually putting a 14 bolt back there instead of putting any money into the 12 bolt. So for the time being I ordered a 1350 yoke to go on the 12 bolt rear end, but I didn't really think it through. Am I correct in thinking that the rear pinion nut is what loads the pinion gear against the bearing in that rear end? If that's the case, then the right way to change out the yoke would be to pull the center section and basically re-set up the rear end using the new yoke, right? Just buzzing the pinion nut off and on with an impact wrench and the new yoke would most likely leave it either too tight or too loose and I could wipe out bearings or change the way the teeth mesh which would also be very bad. Does this make sense or am I missing something? Would I be better off just using a conversion joint until we decide to do the 14 bolt swap? I haven't atempted setting up a rear end yet and don't have the right tools and we really don't want to put any money into this 12 bolt. Thanks for the input.