I live in nsw so I'll be ok. So anyone got any good links, or anyone that has done a wet system on a cammed ls1 got any tips?
As far as I am aware VSB14 applies in NSW:
Vehicle Standards Bulletin 14 (VSB 14)
LA 2.14, p12 "Nitrous oxide injection systems must not be fitted. This prohibition includes a partial installation or
a disconnectable nitrous oxide system that is fitted to the vehicle ready for use."
Interpret that as you wish.
I can say that it is possible to hide a nitrous oxide system so well that it requires substantial disassembly of the car to detect it. Substantial disassembly is unlikely in any roadside inspection or even a roadworthy inspection. It may not be if you are unfortunate enough to be involved in an accident, particularly one in which someone is serious injured or killed.
Some components, such as wiring, cannot be ascribed specifically to a nitrous oxide system and it is possible to have a system so simple that it is possible to "install" it in the pits at an off street drag meeting. You can't be fined for carrying a box of N2O system parts around. There are some restrictions on carrying a bottle containing N2O though.
I have used both of the above strategies. I have never been fined for having an N2O system fitted or even inspected. The latter I suspect is due to the external appearance of the vehicles into which the N2O systems were fitted.