from there site
Street Rods and Customs can be registered for full time road use in most States of Australia, so long as the normal registration and third party insurance fees are paid. To become fully registered a vehicle is required to have the necessary paperwork, this includes an Engineers Certificate, Roadworthiness Certificate, transfer and or previous registration papers, weight bridge certificate and comply with the National Street Rod Registration Guidelines. Engine and chassis numbers must be clearly visible.
Most States also now have an ASRF administered Street Rod Registration which is similar to the club registration enjoyed by the restorer type car clubs. Vehicles are restricted to only being driven to and/or from sanctioned events, whilst undertaking repairs, or with express written permission. The fees associated with this form of registration are much less. To obtain Street Rod registration, owners must be a member of the ASRF and have undergone an inspection by the relevant TAC.
here the link to street rod reg requirement and what not
http://www.infrastructure.gov.au/roads/vehicle_regulation/bulletin/street_rod.aspxhaven't read all the rules
but have read 90 days a year driving unrestricted, and up to 460ci (the bit i like)