David neither of these photos are GMHolden (Aust) bodied trucks. The bottom picture looks more like a British rear body design and the top one is not GMHolden bodied either.
Another detail to watch for is Holden bodied Chevs have a vent on the side of the cowl between the two door hinges. The others don't
My guess is British CKD jobs.
Cheers
Cliff
