How many lugs does the front wheels have? If it's really a C20, that's completely the wrong rear. If it's a C10 there's alot of choices for gearing. A C20 would of had 8 lugs and a C10 would have 6. The 5 lug would be from either a newer C10 or a large car, I don't have the resources to decipher your info.

Welcome to the Stovebolt!!!

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!