They're all driveable. I think the AD models are a good choice, about as old as can be and still keep up on today's roads OK without any or much for upgrades.

Just decide what is important to you and what you want in a truck. Consider what you will do with it and which model is best suited to that.

Probably not a wrong choice unless it's more of a basket case or rust bucket than you can or want to handle.

•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-