Those ones are specially built for the mining industry. Very cool. I saw one for sale in Alberta not long ago. Dirt cheap, but would need major modifications and inspections to be road legal.
The HZJ79 cab and chassis is still available in Canada, although in very limited quantities. Further restrictions are that they are only accessible to the mining industry, and only through one Toyota dealer in Saskatchewan. The 70 series was not sold in the US.
https://en.wikipedia.org/wiki/Toyota_Land_Cruiser_(J70)
The 70 series is still sold around the world, produced since 1984 and updating the tech as they go.
This LC museum has a completely unbelievable collection:
http://www.landcruiserhm.com/in-museum
I go crazy for these trucks..