Awesome WASP goodies
Potentially, you could have the most bullet proof Procat transmission in the world
Will you go the whole hog and fit ceramic balls and bearings all round? roulementpassion on eBay France do a good range of rubber sealed hybrids. Might also be worth sanding those diff plates, depending on their state of wear. I sent mine to B-Fast for flattening/grinding and it makes a big difference. I use U1631 outdrives, which are excellent for locking the diff axles and keeping the thrust bearings sealed.
If you don't mind me asking, how did you come across such a rare find? I was just wondering also, do the gears need grease? I would suppose not otherwise it would get on the belt.
Great looking project you got there