SSS Automotive in Sydney will be able to help you out/ They are in Giraween or something.
And those bits your looking for are some of the most sought after parts that R30 nuts look for, so it aint gonna be cheap.
Tail lights, expect $300
Bonnet about $200 plus.
Filler panel, I have seen em go for $200 plus
Head lights, I have seen for $300 a pair, and thats CHEAP.
OR in rare occasions someone will sell a complete setup for cheap.