IIRC, the door panels are pretty big, so the door glass replacement should be nothing special.

Tires? Hard to search for your area from here, because I don't know where you are vs. guys like this:

Commercial Truck Services Dorchester Tire Service, Inc. Boston, MA (617) 436-0900

IF this thing has 6 lug wheels, which it should, you can go with some 9R22.5 tubeless tires if you want, as wheels should be easy to find.

Price? Beats me, but you can try to find comparable trucks:

ClassicTruckCentral.com | Classic Trucks For Sale | 1956 Ford F600 Truck For Sale

ClassicTruckCentral.com | Classic Trucks For Sale | 1950 Ford F-6 Truck For Sale

ClassicTruckCentral.com | Classic Trucks For Sale | 1950 Ford F-5 Truck For Sale

Does it have a title?

Other stuff I've found that might could come into play:

--thread about the two speed, with links to Eaton in post 12:

https://www.ford-trucks.com/forums/1...y-58-f600.html

Note brake size info in post 3.

Hoist parts in post 5:

https://www.ford-trucks.com/forums/1...l#post11768171