The front fenders and wheel openings were enlarged to fit the 20" wheel of the big trucks. Using that body on a 1/2 ton frame would be way out of proportion. Transplant your body to an old diesel delivery truck with a modern drivetrain would be a cool way to salvage your body.
There's my 2 cents,
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!