The photos are in my album now...
The bearings are Japanese-made...1-5/8" OD...3/4" ID
The housing is an old Carter...8-3/4" long, but can be shortened...
A few different sprockets...one is #35 pitch...the rest are #40/41...
Assorted sheaves and belts if you want to go that route...the Comet series 40 driven unit works, but has no driver unit, but I have a good Comet-brand belt for it.
I used a shortened-housing setup just like this and made a mounting plate that was slotted in the opposite direction of the slots in the housing so I could easily adjust it both side-to-side and forwards and backwards...works good.
Those housings can have a few inches chopped from the center if needed...a sized rod inserted through the bore while welding them back together keeps everything aligned.
Let me know if any of this stuff is usable and I'll box it up...less for me to pack up and haul to Nebraska next week.