hate to get picky. anyway, i think its just a matter of registering it and paying stamp duty and rwc etc., in the state you bought it, drive it back home, get all the paperwork you'd need to register a "new car" in nsw, go to rta and pay the transfer fee and plates and no stamp duty. tip: get your car weighed, the rta wanted to put me in the 1500 - 1899kg (?) bracket, but i was able to prove my car only weighs 1320kg. saved me around 100bux a year i think. i was only paying 480/yr for rego in nsw!
-rb25