[rustrunner]

I just picked up (from the jaws of the scraper) a Terratrac. The Model Number indicates it is a 200. In fact the Serial number (according to TractorData) indicates it is the last one made. My problem is that I can find no information on the difference between the 200, 256, 300, 356. Is there a source that will provide me with information on the subject.
Is a wide tractor