The whole car. The engineers certificate then allows you to get a blue slip (ie. get number plates) and then do rego.
I have a list of places in Sydney as I am importing an R32 GT-R -- but not adeliade I'm afraid. There doesn't seem to be a directory of these workshops so they can be quite hard to find, but Geoff should be able to point you to someone. The cheapest in Sydney is about $1200, the median is about $1500, and the more expensive places about $1800-1900.
LW.