During the tech night at JLM, apparently they no longer go off the build date on the plate. All imports are now to be registered to the year that it was imported in.
So if you go and import a R34 today, the build year would be 2013 (sweet!). Judging by that, it was imported 3 years ago, would have sat in a yard for a few months, then to dealership for a few months before it was bought for the first time, in Australia.
Those who also attended the JLM tech night about importing, if I'm wrong, please correct.