We already have the snorkel and whels but the main additions here are the cabin extension with the windows, beds and the doors that open outward. And there is a model that looks like it's got a hat on the truck which is more sleeping room. The truck would run on diesel and would have a primitive turbocharger with black or grey interior.
The D series is pretty much the closest thing to the toyota. the hopper is based on the jeep. would see no logic --- Post updated --- If you look at the D series here, it's almost there but it needs the box basically
i'm looking again at the Gavril H- series remaster which would also very much fit the profile of the australian camper truck series as well as the troop carrier as well. the parts would work.
not quite sure how to tell you this... the Land Cruiser 70 was a jeep/hopper sized thing to start with.