Your pickup box appears to be from an AD series 1947-1955.1 1/2 ton, which measures 50 inches wide (inside) by 78 inches long (inside). Does the tailgate have "CHEVROLET" embossed on it. An earlier tailgate would be plain (no embossed logo.)
Kevin 1951 Chevy 3100 work truck Follow this saga in Project Journal Photos 1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car) Busting rust since the mid-60's If you're smart enough to take it apart, you darn well better be smart enough to put it back together.