Here's a start.... I used this company to order manual transmission parts for a '62 3sp+od. With the economy the way it is a call to the several companies you can search on ebay will allow you to obtain the lowest price, all-american bearings, more complete kit, etc.
A parts washer would be handy, rebuild manual, tools on hand. I don't know what you mean by, "It's been sloppin gear oil around pretty profusely, so it needs cleaned." That's what happens inside of these old trannies, 90 wt. gets slung around. Do you really need a rebuild? Have you changed out the 90 wt.? I'm using 90 wt. synthetic.
Here's another thought. Daily driver = Rebuild The Transmission. Parade or Seasonal Driver ~ several hundred miles a year = New 90 wt. synthetic and spend yer money on wax.
