Ford semi tractor unit

[cliff]

I found the picture of this ford with what appears to be a military style open body similar to the GMC-CCKW open cabs. There is one other pic that I have from the same AWM photo database but it is too indistinct to use.

My question is that since Aussie had these in the Ford version would some conventional type Chev's have been done as well?

If so what wheelbase would they have been?

any help would be appreciated