No doubt that finding parts for older Toyota diesels will get harder. It could be a real chore for those in the US though I know that parts for the 2H are available because as PVcruiser says they were used in North America commercially. I asked our forklift repair contractor at work if he could get parts for my 2H, he said he could.
I remember that my friend had a Hino cab over NA diesel town truck (horribly gutless, yet super reliable!) that he used in his moving business, I remember that some of the parts were the same as on my HJ60, the tach for instance was identical. I'm sure it wasn't 2H powered but parts for '80's Toy diesels are around. As a matter of fact the later Hino trucks were turbo diesel, I wonder what motor(s) they have in them.
I've also sourced parts in Austrailia as well, and although it may not be reliable forever, parts are available through regular store operators on EBay.
In Canada, 4wheelauto stocks rebuild kits for all Toy diesels, and they have a good line on getting other diesel parts as well.
Here's the link to their rebuild kit stock:
http://store.4wheelauto.com/view_product.php?product=DIEW0Z2J22
Or their home page:
http://www.4wheelauto.com/
From the sounds of things some people who have bought JDM Cruisers from Toyota dealers here in BC have had a hard time getting parts and service for them, I guess they are only interested in selling and not servicing them.
Even if you are in the US and their is no parts support, nothing is further away than a jet plane ride if you are prepared to put up with the inconvience of the wait and are willing to invest the time to work on it yourself - especially since most mechanics at dealerships will be unfamiliar with them.
