I bought the ugliest girl at the dance, and if I can get her dancing again, would like to gussy her up a bit if there are some parts available.
What kind of parts?
I think engine parts are available.
Hoses are mostly discontinued, but can be measured and ordered on-line, or duplicated at a local shop.
Cylinder kits may still be available, but have gotten expensive. I've found a local hydraulic shop to be more convenient and cheaper.
Body panels seem to be hit-or-miss from Kubota. There are a couple of salvagers on this site, if needed.
I recently replaced the swing bushings on my backhoe, and parts were available from Kubota.
The oil filter bracket on your other post shows to be discontinued. If you're unable to straighten it, you may be able to cut and splice a piece of steel tubing (EMT?) in to repair it.
The tractor was originally delivered with the necessary 3ph arms, etc. If you didn't receive them, and will need 3ph capability, a kit is available.
My Katy may not be the prettiest, but, with some TLC and upgrades, she's become pretty indispensable.