A few years ago I saw in a Nebraska test book a kit for hooking up 2 tractors front to back, they were fords. Memory can play tricks on ya but I think I remember seeing a similar deal only what I saw was mabey a D-9 and an M. The outfit was running a couple hundred feet off the road and 40 or so years ago. I guess my question would be, does anybody have any information on this? Was there a company that sold kits for different makes? Its just been in the back of my head for years, thought I'd get it out there. thanks.