The cab is an International S 1800 twin cab from the USA, the chassis and running gear is from a Ford F 6000 and the motor is a Detroit V8 diesel (four stroke)
It comes from up your way to Chris around Townsville I believe, the guy who owns it said on their Simpson Desert trip he had 3 flat tyres....imagine changing one of those wheels and tyres and he is not a young fellow either.
here's a photo of my daughters 1986 Toyota sunrader, its 4- wheel drive also, R22 motor with 5 speed, gets 15MPG on the hiway, she bought it on ebay and she flew me out to California to pick it up and drove it back to her place in North Carolina, 4,000 trouble free miles, great runner