OK, interesting. You will have a different turbo and intercooler to the 'Aussie' models.
When ordering from the US make sure you specify early 99. You will actually need the 3" IC boots. I know cause I got the wrong ones and had to reorder. I still have the 3" boots somewhere, but you usually just buy a complete set. You'll probably find a lot of your interior parts, the ones that are different in any case, are equivalent to the US OBS (Old Body Style) 7.3 model.