Kubota tractors: confused about "grey market" and "lack of parts support" for old machines

Hi!
I'm looking for someone who can explain the issues surrounding Kubota and parts support for older machines...and if this ties into "grey market machines".

I'm looking at a Kubota tractor, 1981 model M7500DT, which is a mechanical 4 wheel drive tractor of about 80 hp. It has a standard gear transmission.

My concern surrounds the issue of parts. Are they still available? I don't know if this machine would fall into the Grey market category, where I understand machines meant for Asian consumption were shipped to North America. Or the other issue that I don't know much about where machinery older than a certain date is still called "Kubota" but the company did something--restructured or changed hands but kept the name--and machines built before this date were instantly shzt out of luck for any parts support.

Can someone help me out by explaining this issue?

Thanks!
Jon.

check out https://www.tractorbynet.com/forums/ for more information under the Kubota folders. There should be more information on that site than most others regarding farm tractors.

I never dealt with Kubota prior to 1992 so I'm no help with older models.