| Engine Modifications (Code LA) | |
| LA1 | Equivalent Engine Substitution |
| LA2 | Performance Engine Substitution |
| LA3 | Supercharger/Turbocharger Installation |
| LA4 | Engine Modifications |
| Transmissions (Code LB) | |
| LB1 | Transmission Substitution |
| LB2 | Rear Axle Substitution |
| Vehicle Controls (Code LC) | |
| LC2 | Dual-controls for Driver Trainer Vehicles (Modification) |
| LC4 | Vehicle controls for persons with a disability (Modification) |
| Brakes (Code LG) | |
| LG2 | Brake System Conversion |
| Body and Chassis (Code LH) | |
| LH2 | Roof Conversion |
| LH4 | Modified Wheelbase Conversion |
| LH6 | Vehicle Construction |
| LH7 | Body Chassis Variants Conversion |
| LH11 | Campervan and Motor home Conversion |
| Seating and Occupant Protection (Code LK) | |
| LK1 | Seat and Seat Belt Installation |
| LK6 | Child Restraint Anchorage Installation |
| LK8 | Roll Bar and Roll Cage Installation |
| LK10 | Aftermarket Roll Cage and Roll Over Protection System Installation |
| Fuel Systems (Code LM) | |
| LM1 | Fuel Tank Alteration |
| Suspension and Steering (Code LS) | |
| LS2 | LHD Vehicle Steering Conversion |
| LS4 | Front Suspension and Steering Conversion |
| LS6 | Rear Suspension Converstion |
| LS10 | High Lift - 50mm to 125mm (Modification) |
| Certified Tests (Code LT) | |
| LT4 | Noise Test |