more research...Harry sent TE-20's over from England (TE, tractor England, not Europe) to compete in the Ford market while he was setting up a plant in Detroit to build the TO models in the US. That is why there are still a lot of TE tractors, but the article said they were all in the same except for the name, TE or TO, just in case anyone buys a TE, TO patrs should fit it fine.
So I guess the TO tractors are old American iron.
Another thought for the original poster of this thread. Harry Ferguson designed the TE/TO tractors to be simple and easy to work on so the farmer could keep them going without the help of a professional shop, saving the farmer money and less downtime for repairs. They are simple tractors, compares very much to the N series Fords. That might be something to think about as well. Even in todays high tech era, the older tractors are easier to work on and maintain than the newer more sofisticated tractors. I'm all about saving a dollar as long as I can get the job done.
Not sure who posted it, can't scroll back and look at this point, but the poster was praising his 8N compared to his Kubota for all round use. That was basically how I compared my TO-35 to my Yanmar. The KUTs are great tractors, but do not offer the versatility of the older simple tractors.
And to the poster saying a good tune-up would be to put a flare and a match in the gas tank. That was a funny statement, I did laugh, but I can bet you he never owned a N series Ford or a TO series Ferguson and used it long enough to really see its potential or grow to really appreciate it. But it did make me laugh...lol.