Don't get either over here - you can even get some nismo products through dealerships over here for skylines, when we never got any of them locally bar the R31, they were all grey imports.
Bugger all in australia for GA16 support - not even the simpliest of the lot - CAI kits, but they have Suborn so i'll live (well we did till recently).
New Zealand sites might be the place to try though, they got all the imports locally - apparently they have a bit
