Last night I stumbled across a link to 3D print files, some free - most for sale, at Fab365. (I was watching the build video of a 3D printed Firefly Serenity ship, but that's a tale for another forum.) Anyway, this is the link to Fab365's home page.
https://fab365.net/
If you look under the "vehicles & machinery" collection category you will find several trucks by CARLOS_DIAZ. They are all 1:14 scale, and for about $10-$15 you get the files to print a scale model, and printing times/recommendations/instructions. You want to build a WW2 era GMC Deuce and a half, it's there. (In great detail.)
Don