Easy to print Diamond T-967 4-ton truck, 1/100 scale, will want some greebling if scaled up. Some details have been changed for looks/ printability.
The T-968, which is by far the more popular variant does not have the headlight brushguard loops, so trim those off before assembly if that is the look you want.
The extra front bumper is to be attached upside down (to make a hole in the middle) if so desired. It looks like the second bumper was an in the field or post-war add-on.
Scale by 1.56 for gaslands / hotwheels / 1/64
Scale by 1.786 for 28mm / 1/56