Here is a couple pictures of my 1955 unimog 401. 25HP diesel. The biggest little truck ever built, haha. With a wheelbase of only 65" it was however to short for a lot of trails. So I sold it and bought my next Unimog which was a 1969 404 swiss army troop carrier. Unbelievabley capable truck on the trails. Often had Jeeps dragging behind on a tow strap. The downside was it was just too dam slow on the road and too dam big to haul......So I sold it and bought another Landcruiser.
These are photos of Unimogs my father worked on when we were living on Stradbroke Island (off the coast of Brisbane Australia) in the 50's. There were only 7 in the country at time with 5 of them on Stradbroke.