Here is a link to the roadworthy requirements when getting a safety certificate in sunny Queensland
http://www.transport.qld.gov.au/resourc ... eb2004.pdf
This is a link for the modification codes but I will also list them here for ease.
http://www.transport.qld.gov.au/resourc ... eb2004.pdf
Here is a list of the modification codes. The L at the start of a code indicates it's a light vehicle modification.
CODE MODIFICATION
LA1 Engine Substitution
LA3 Turbocharger and Supercharger Installation
LB1 Transmission Substitution
LD1 Rear Axle Replacement
LD2 Differential Substitution
LG1 Brake System Substitution (Design)
LG2 Brake System Substitution (Modification)
LH1 Convertible and Cabriolet Conversion (Design)
LH2 Convertible and Cabriolet Conversion (Modification)
LH3 Passenger Vehicle Extended Wheelbase Conversion (Design)
LH4 Passenger Vehicle Extended Wheelbase Conversion (Modification)
LH5 Individual and Low Volume Vehicles (Design)
LH6 Individual and Low Volume Vehicles (Modification)
LH7 Panel Van to Utility Conversion
LH8 Roll Bar and Roll Cage Installation
LH9 Street Rod Certification (Concessional Registration)
LH10 Street Rod Certification (Unrestricted Registration)
LK1 Seating Capacity Alteration and Seat Belt Installation
LK2 Seat, Seat Anchorage and Seat Belt Anchorage Certification
LK6 Child Restraint Anchorage Installation
LK7 Motorcycle Seating Capacity Alteration
LM1 Fuel Tank Alteration
LO1 Australian Design Rule (ADR) Compliance
LO2 Pre 1972 Imported Vehicle Safety Compliance
LO3 Personally Imported Vehicle Compliance
LS1 Steering Conversion (Design)
LS2 Steering Conversion (Modification)
LT1 Beaming and Torsional Testing
Hopefully someone finds this information useful.