[Stocker]

I can't answer your question, sorry, but I have a question (observation?). Looking at your pics of rear diff & driveline, the diff is angled up so that the yoke is nearly straight in line with the driveshaft. This will cause the front yoke of the driveshaft to meet the t-case at a fairly severe angle. I may be mistaken as I haven't done this myself, but I thought that the angles at both ends of the driveshaft should be the same - and each u-joint will be on the same angle. That is, although front & rear yokes will be on different planes, they will be parallel to one another. I think this allows the driveshaft to spin more easily (or more smoothly) and places minimal strain on the u-joints. Hope this makes sense.

Maybe your diff is only mocked-up at this point and you're already ahead of me. Or maybe I'm all wrong! Anyway, just wanted to call it to your attention and maybe save you some grief down the road.