Gonna take a shot at uploading a picture of a tractor a friend of mine got and restored.It's a Beauty!! Quite the machine!!
It was originally built in 1966 by a gentleman in Oxbow S.K. It is one of two sets built.The tractors are a 1949 and a 1939 John Deere D joined to have single operator controls and articulated steering.Total engine displacement is 1002 Cu.In.