I have a '64 Int'l C600 Pickup in my barn. I drove it until the 80's. 152 4 banger, 3 speed non synchro trans. It's the step side short bed model.
I have some spare parts.
They are pretty durable, made of simple parts. Seals, etc. are otc. Brakes on mine are Ford, distributor, Delco. Carb 1 bbl Holley.
Int'l bought systems from others and assembled them. So, the run can have mixed parts.
The piece most valuable is the radiator core support. That big stamping in between the headlights. Very rare. However, the Travelall of the same time period used the same piece.
Scrap prices are so high, the old trucks are disappearing from the bone yards around here.
I had Scouts as well. 2 and 4 wd. They were not that good.
I've had every piece apart to repair or rebuild on my Int'ls, so if you ever have a question, PM.