[motto]

The differences between trucks can be quite bewildering and I'm not convinced that it is all due to post war tampering. The example of the 4403 truck is a case in point where the cargo body is obviously the standardised 12 foot body as used on the GMC CCKW and Studebaker US6. The mud-guards are even still in the original place, spaced to fit on a tandem axle truck so there is no doubt about the origin.
It all seems to have been a matter of mix and match or what was available at the time and one would be a fool to make definitive statements. I presented my truck as a model 4403 because I had a cargo body from a US6 and had an officer attached to the army museum tell me it was a nice truck but had the wrong body on it. I respectfully informed him he was not entirely correct and showed him the photo of exactly that combination in TM 10-1525.
With light or heavy front axle, light or heavy steering box, military or civilian instruments, left or right hand drive, left or right hand fuel filler neck, 20" or 18" wheels, US or Australian cab, civilian parking or military marker lights, with or without aux fuel tank, with or without chassis reinforcing, rhinoceros tusk or standard ordnance pintle, single or two speed diff, variations in paint colour etc the combination is endless so happy Chevings whatever you have.

David.