Alright! I managed to get my Saginaw 4 Speed 3 ringer rebuilt! Took a little while, and to be honest the mysteries of the manual transmision are still... a bit of a mystery to me. Actually, it's not really all that complicated in principal- but you've gotta love the engineering that went into something like this. Gears, counter gears, sliding in and over eachother. It's transmission porn, I tell ya. It took a bit of work to put everything back together, truth be told - there are a LOT of parts. The manual was... to put it lightly, mandatory.
Next up: Brakes! I'm planning on ordering a disk kit for the rear end and working out what to do for a master cylinder/pedal/clutch etc...