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Modification Plates



Owners sometimes modify their vehicles to give them a distinctive appearance, improve their performance, add desired features, change the engine (alternate or replacement engines), suspension, adding a long-range fuel tank.

Others modify their vehicles to be better suited to a specialised purpose.

Vehicle owners who wish to modify their vehicles need to follow the vehicle standards guidelines and relevant approved codes of practice that apply to the modification of vehicles.

Many intricacies are required to certify any modifications and some regions cannot offer some codes. We suggest you contact us first to ensure the requirements are met.


Please Note: LS11 GVM and LS12 Caravan ATM upgrades are only offered by our Maryborough workshop.

Please Note: We do not do lift modifications 


Modification Plates Available:

Light Vehicle Codes - Mobile Service

LA1 Engine Substitution

LA2 Performance Engine Modification

LA3 Turbocharger and Supercharger Installation

LB1 Transmission Substitution

LB2 Rear Axle Substitution

LC2 Duel Controls for Driver Training

LC4 Controls for Disability

LG2 Brake System Substitution (Modification)

LH2 Convertible and Cabriolet Conversion (Modification)

LH4 Passenger Vehicle Extended Wheelbase Conversion (Modification)

LH6 Individual and Low-Volume Vehicles (Modification)

LH7 Panel Van to Utility Conversion

LK1 Seating Capacity Alteration and Seat Belt Installation

LK6 Child Restraint Anchorage Installation

LK8 Roll Bar and Roll Cage Installation

LH10 After-market Roll Bar and Roll Cage  Protection Installation

LH11 MotorHome Conversion

LM1 Fuel Tank Alteration

LS4 Front Suspension and Steering Conversion

LS6 Rear Suspension Conversion

LS11 Light Vehicle GVM Upgrades

LS12 Trailer Caravan ATM Upgrades

LT4 Noise Test

Heavy Vehicle Codes - Mobile Service 

A1 Engine Substitution

A2 Air Cleaner Substitution or Additional Fitting

A3 Turbocharger Installation

A4 Exhaust System Alterations

A5 Road Speed Limiter Installation

B1 Transmission Substitution or Additional Fitting

C1 Tailshaft Alterations D1 Rear Axle/s Installation

D1 Rear Axle Installation

D2 Differential Substitution

E1 Front Axle Installation

F1 Suspension Substitution

F2 Trailer Suspension Modifications

G1 Air Brake System – Repositioning of Controls, Valves and Pipework

G2 Fitting of Trailer Brake Connections and Controls on Prime Movers

G3 Trailer Brake System Upgrading

G4 Brake System Certification

G5 Auxiliary Brake Installation

G6 Air Operated Accessories

G7 Brake System Substitution  

H1 Wheelbase Extension Outside the 1st Manufacturer’s Option

H2 Wheelbase Reduction Less that 1st Manufacturer’s Option

H3 Wheelbase Extension or Reduction within 1st Manufacturer’s Option

H4 Chassis Frame Alteration (other than change in wheelbase)

H5 Trailer Chassis Frame Modification

J1 Mounting of Body – Vehicles greater than 4.5 tonnes GVM

J3 Ropes Installation

K1 Seating Capacity Alteration and Seat Belt Alteration

K3 Cabin Conversion – Construction of Through Loader

K5 Wheelchair Restraint Installation

K6 Child Restraint Installation

M1 Fuel Tank Repositioning or Additional Fitting

P1 Tow Coupling Installation - Vehicle greater than 4.5 tonnes GVM

P2 Fifth Wheel and King Pin Installation Page 3

Q1 Truck Mounted Crane Installation - 1.0 to 10 metre tonne capacity

R1 Goods Loading Device Installation

R2 Wheelchair Loader Installation

S1 Truck Mass Rating to an Approved Design or Within Manufacturer’s Specifications

S6 Omnibus Evaluation

S7 Aggregate Trailer Mass Rating to an Approved Design or Within Manufacturer’s Specifications

S10 Concessional Livestock Loading Vehicle Rating

T1 Construction of Tow Trucks  

Engineering Codes - Maryborough Workshop 

LG1 Brake System Conversion (Design)

LH1 Roof Conversion (Design)

LH3 Modified Wheelbase Conversion (Design)

LH5 Vehicle Construction (Design) 

LH2 Seat & Seat Belt Anchorage (Design) 

LK9 Roll Bar, Roll Cage and Roll Over Protection System (Design)

LO1 Australian Design Rule Compliance

LO2 ICV Passenger Cars and Derivatives

LO5 ICV Tricycle 

LO7 ICV Motorcycle

LO8 Pre 1972 Imported Vehicle Safety Compliance 

LS1 LHD Vehicle Steering Conversion (Design) 

LS3 Front Suspension and Steering Conversion (Design)

LS5 Rear Suspension Conversion (Design) 

LS11 GVM UPGRADES for Light Vehicles, Cars and 4wd 

LS12 ATM Ugrades for Caravan and Trailer 

E2 Steering System Alteration

E3 Fitting of Non-Standard Wheels and Rims and Tyre Componentry

G4 Brake System Certification 

K2 Seat belt Anchorage Certification 

S2 GVM Rating for Non-Standard Vehicles

S3 Gross Combination Mass Rating

S4 Rigid Omnibus Mass Rating 

S5 Articulated Omnibus Mass Rating

S11 Road Train Trailer Rating

S12 Aggregate Trailer Mass Rating for Non-Standard Trailers

S13 Bus Life Vehicle Rating

T2 Design of Tow Trucks 

Looking for performance parts to complete your modification ?? Check out Pro1 Race Parts 

Need a guide to performing your mods ?? Download the Codes and Check Lists -

Heavy Vehicle Code Click HERE

Light Vehicle Code Click HERE

Mod Plate

Servicing All Regions

Gold Coast, Greater Brisbane, Ipswich, Toowoomba, Caboolture, Sunshine Coast, Kingaroy, Dalby, Gympie, Maryborough, Hervey Bay, Bundaberg, Gladstone, Rockhampton, Emerald, Sarina, Mackay & Townsville.

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