We had a pickup (1954?) that came with our cabin in Hayward. It was basically used to get the boat out of the water, haul firewood, shine deer (kidding), pull stumps etc. A total beater, but we never had to anything with it except fog the motor before winter storage.
It was was left with the cabin when Dad sold it.
Anyhow, if I were him, I'd to join the Willys Overland Jeepster Club to get some solid leads on parts sources:
http://www.jeepsterclub.com/