David, There is an ex.Sale RAAF Base Power Wagon in Orbost. It is now in civilian paint but owned by the Caterpillar repairer up there. Had some photos years ago but don't know where they are now. He was at Corowa with it for the Year of the Dodge a while back.
(Doesn't it give you the gipps when you can see the vehicle and know the owner but can't remember his name!)
Had a look at another MLU thread and his name popped up. "Terry Philips". So it just takes a bit longer some times.
Regards Rick.