Japan is a good option for a couple of reasons....
Firstly, the proximity to Australia would make shipping both quick and inexpensive.
Secondly, I don't know for sure if Euro dials are KMPH & MPH, whereas I know for a fact that those in Japan are only KMPH.
Thirdly, due to strict legislation about cars over a certain age, most of the cars in Japan are low-mileage examples - although the mileage figure wouldn't be a factor if only the dial faces are wanted... but still, low mileage anything means less wear and tear. Plus, the cost of parts in Japan is pretty competitive when compared to Europe.