I still get parts for my '48 1.5 ton through my local parts houses. Also, most of the popular mail order parts companies offer parts for the 3/4 and 1 tons. Try Brothers Truck Parts, Chevy Duty, The Truck Shop, etc.
Good luck and welcome a board. Make sure you send some pictures over to the gallery,
Scott

Scott Ward

2 1948 1.5-ton Loadmasters
The red one and The snow pusher
1 1950 3100
1 1955.1 Chevy 6500
1 1954 Chevy 6500 2-Ton
1 1955 1st Series COE 5700
1 1963 K20 (454)
1 1964 C10 (350)
1 1951 1.5-ton Dump Truck
1953 and a 1956 Ford F800

Raising a teenager is like trying to nail Jello to a tree!