That's my favorite Autocar body style, late 40's with flat windshield, and usually with 12x24 tires, but somehow the one with what looks like a pickup chassis underneath doesn't do it for me.. It is a nice color though.
But for the 1.5 ton Chevy pickup idea. I agree, should only need a 1 ton bed with long running boards plus a few more brackets, and the special wide rear fenders you'll have to make.
Grigg