I may have at least some of the parts. I had an early 80's model long shaft I converted to short. It was used in saltwater though and the bolts attaching the lower to the leg extension were corroded and snapped off. I drained the lower oil and it was nice and dark with zero water intrusion so I put it up and haven't touched it since - that was about 4 years ago.
If you are still looking, PM me your cell and I can text you pics of what I have. I know I have the leg extension (as mentioned currently stuck to the lower though), the driveshaft, and I think I have a water tube extension. Not sure on the shift rod. I would prefer to sell the whole lower though as I have no use for it.