Hey my name is Edan, I'm the owner of Silver Mine Motors in USA.
I'm going to be visiting your beautiful country in 3 weeks.
If you are interested in getting any brake upgrades for your S30 I could bring some parts in my suit case and mail them, or meet you when I arrive.
I can only bring small light items like all the custom made brackets and spacers, not actual calipers and rotors. you would have to source those parts in Australia.
our website is silverminemotors.com
look at all our brake kits and let me know if you want any parts.
here are a few pictures of the brake kits we sell for S30.
this is our rear disk conversion. for S30. brackets cost $160, lines $75
here is our front stage 4 kit. spacers cost $110, lines $75
This is a front stage 4 kit for 280zx. brackets $180 lines $75 Spacers $110
here is our rear stage 4 kit for S30. brackets $200, lines $75
Let me know if you want any parts.