The tractor was a normal 6×4 Scania flatbed when I bought it. I modified it by removing the flatbed an adding a fifth wheel and some other details to make a tractor version. The trailer started as a container trailer or semi- trailer which I converted to a flatbed with some scratch building involved. The boom on the trailer itself was taken from a toy excavator. I modified the boom with parts, detailing it with hydraulics and such. The cradle was also scratch built in balsa wood.
12 additional images. Click to enlarge.