In researching something (I don't remember now what I was looking for), I came across this u tube of a two wheel tractor conversion to a 4 wheel unit. I'm guessing the u tube might be Russian due to the alphabet, but am not certain. In the u tube, the person has a conversion that he quickly adds to his two wheel tractor that has a dump box, plus allows him to ride the now articulated tractor. The conversion is quick, either to 4 or two wheel, as he still uses the two wheel configuration for other farming operations. There are quite a few u tubes by this guy, and it looks like the two wheel tractor may have started out as a rototiller. On one he even adds a gear box and a pto drive out of it. Very interesting, very ingenious. Thought others here might enjoy this as much as I have. It is a reminder for us, that others around the world don't have it quite as good as we do.