So I am looking at buying a 1980's john deere 25. He says it Has a couple bad bottom rollers, sloppy bucket bushings, the swing bearing on the turntable rocks a little , and overall it works fine and runs good. It is in my price range of under 10k which is pretty rare for anything that even works. I am wondering if I buy if what kind of a snake pit I could be getting into finding parts. I work on my backhoe and dozer in my garage and don't mind doing the work it's just scary wondering if I will be able to find stuff for it. Does anybody know if there is a yanmar excavator that uses the same undercarriage parts? how hard would it be to convert it to rubber tracks? heres a cuple pics