Starting a new project? Tinkering with your current project, here is some great links to some government websites that have lots of useful information.

National Code of Practice for Light Vehicle Construction and Modification (NCOP)
General info on all light vehicles

Second Edition Australian Design Rules
Cars produced from Jan 1969 to July 1989

Third Edition Australian Design Rules
Cars produced from July 1989 to Current

Vehicle standards information sheets
NSW RTA modification rules