[Trevor Booth]

David S,
step one-
contact an Engineer and or VicRoads in your state and find out what the rules and regulations are and in particular engine emissions. Ask if the national light vehicle code of practice has been or will be adopted in Victoria and if so what are the implications. Be prepared to pay an Engineer if you want the right advice and what supporting documentation you will need from the manufacturer and get it in the form of a written advice from the Engineer. Then use the same Engineer for the certification process

Step two make your choice and pay your money