Simplest would be to find another original frame for your truck. Even if it comes complete with another cab and running gear it is probably worth having the extra parts to chose from as you make one truck from one and a half.

Is the 1/2 truck you are looking at in great shape? If not perhaps it could be the parts truck for a more complete one?

Grigg


1951 GMC 250 in the Project Journals
1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-