This is a rebuild of an Australian designed No8 field artillery tractor, and was the first CMP type to be modified to tow the 25 pounder as well as other artillery.
It was found as a wreck with most of the rear upper body missing and this has been fabricated from photographic reference, although the interior lockers are missing.
Of the 98 built, there are only a couple of other Fords substantially intact, with one under restoration. GM-H also built a similar number of this design, with at least one still intact and roadworthy in Queensland, and another under restoration in Tasmania.
Looks a bit like a 3-ton version of a HUP on steroids, doesn't it.
More pics