Thanks for the offer Shaunymog. That would be an interesting trip at 25 mph.
Got most of the cab stripped down last night. It is a great thing to work on, everything so far has come apart easily, much nicer working on this 46 year old Unimog than the 14 year old Land Rover I had until recently. Only fiddly bits so far are the little dash board lights and the 2 main bolts that secure the cab to the chassis.