Sorry for the thread bump,
But i briefly spoke to Iron Chef a week or so ago about bringing my car from Qld to S.A.
Pretty much its just a check over the whole car to make sure it complies to S.A.'s rules.
Any modification plates added (mine for instance was engineered with larger wheels and a roll cage) are null and void.
I rang up Transport S.A. and they pretty much said, get it checked out and if it meets the rego requirements, it'll get rego with an I.D. inspection.
Im still getting more information as the day goes, but ill be ringing regency when i get off my lunch break to just double check everything.