The good news is nearly all the parts are available in Japan. There is a guy who is on Facebook, runs this FB group who can ship stuff worldwide for a small handling fee, so good to know.
https://www.facebook...ewAndUsedParts/
My air-con is now working fine after buying a new old stock evaporator unit from Japan - same problem as buznout, my speedo cable had worn through the pipe - this was a Rover dealer's fault though after the engine was removed / refitted to change the auto gearbox!