Mod Plates & Vehicle Modification Services
Sunshine Coast, Moreton Bay & North Brisbane
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Light Vehicle Mod Plate Specialists
If you need a mod plate for your light vehicle in South East Queensland, you have come to the right place. As a Queensland-accredited approved person, we specialise in assessing, certifying, and issuing modification plates for a wide range of light vehicle changes. Our Glass House Mountains workshop is purpose-built for vehicle modification work, giving us the space and equipment to handle everything from simple seating changes to complex engine swaps under one roof.
Every modification we certify is carried out in strict accordance with the Queensland Department of Transport and Main Roads guidelines. Whether you are upgrading a daily driver, preparing a 4x4 for off-road touring, or converting a commercial vehicle, our team ensures the work meets all relevant Australian Design Rules and state legislation before a mod plate is issued. For full vehicle modification compliance details, see our compliance page.
Our Mod Plate Services
All modifications listed below are performed and certified by a Queensland-accredited approved person in full compliance with the Department of Transport and Main Roads requirements. Each service concludes with the issuance of an official modification plate affixed to your vehicle, confirming the work meets all applicable standards.
Seating Changes & Reduction — LK1
Seating modifications under code LK1 cover the removal, addition, or reconfiguration of seats in light vehicles. This is commonly requested for commercial fit-outs, campervan conversions, and vehicles being adapted for specific trade use. We ensure that all remaining seating positions retain compliant seatbelt anchorage points and that the vehicle's occupant capacity is correctly updated on the modification plate.
Child Anchor Point Installation — LK6
Installing child anchor points is one of the most important safety modifications a family vehicle can receive. Under code LK6, we fit certified child restraint anchorage points to vehicles that did not come equipped from the factory, or to new seating positions created during a conversion. Every installation is load-tested and certified to meet Australian Standards, giving parents and carers across the Sunshine Coast, Moreton Bay, and North Brisbane complete peace of mind.
Fuel Tank Change — LM1
Replacing or upgrading a fuel tank falls under modification code LM1. Whether you need a long-range fuel tank for remote 4x4 touring or a replacement tank for a vehicle conversion, we certify that the new tank meets all safety and fitment requirements. Proper fuel system certification is essential for both roadworthiness and insurance validity, and our mod plate confirms the work has been done to standard.
Transmission Change — LB1
A transmission swap — whether manual to automatic, automatic to manual, or a complete gearbox upgrade — requires certification under code LB1. We assess drivetrain compatibility, ensure correct mounting and alignment, and verify that the new transmission integrates safely with the vehicle's existing systems. This is a popular modification for 4x4 owners across North Brisbane and the Moreton Bay region looking to improve towing capacity or off-road performance.
Differential Changes — LB2
Differential modifications under code LB2 include ratio changes, limited-slip conversions, and full differential replacements. These upgrades are common among 4x4 enthusiasts seeking better traction and durability for off-road conditions. We certify that the replacement differential is compatible with the vehicle's drivetrain and that all associated components — axles, seals, and mounting hardware — meet the required standards.
Equivalent Engine Change — LA1
An equivalent engine change under code LA1 involves replacing a vehicle's engine with one of the same or very similar specifications. This is typically performed when an original engine has reached the end of its service life and a like-for-like replacement is sourced. We verify that the replacement engine matches the vehicle's original power output, emission controls, and ancillary systems before issuing the mod plate.
Performance Engine Installation — LA2
For vehicle owners looking to increase power output beyond the original specifications, a performance engine installation is certified under code LA2. This covers engine swaps where the replacement unit differs significantly from the factory engine in capacity, configuration, or output. Our approved person assesses the full impact of the engine change on the vehicle's braking, suspension, cooling, and exhaust systems to ensure the modification is safe and compliant.
Turbo or Supercharger Installation — LA3
Adding forced induction to a naturally aspirated engine — whether via turbocharger or supercharger — is certified under code LA3. This modification requires careful assessment of the engine's internals, fuelling system, cooling capacity, and exhaust routing. We certify turbo and supercharger installations across the Sunshine Coast, Moreton Bay, and North Brisbane, ensuring that every system is correctly integrated and the vehicle remains safe for road use.
Why Choose Us for Mod Plates
Choosing the right provider for your mod plate is critical. An incorrectly certified modification can result in defect notices, failed inspections, and even insurance complications. With years of hands-on experience across the Sunshine Coast, Moreton Bay, and North Brisbane regions, we have built a reputation for thorough, compliant certification that vehicle owners and insurers can rely on. Our approved person credentials mean you are dealing directly with someone authorised by the Queensland Government to sign off on your modifications.
We operate as a single point of contact for the entire process — from initial consultation and parts sourcing through to fitting, engineering sign-off, and mod plate issuance. Visit our mechanic workshop page to learn more about our facilities. Need child anchor points installed? We handle that too.
Need help understanding which modification code applies to your project? Our mod code reference guide breaks down every QLD modification code. You can also use our vehicle modification checklist to identify exactly what documentation and certification your build requires.
Tips for Choosing a Mod Plate Provider
When selecting a provider for your mod plate, always confirm that the person issuing the plate holds current approved person accreditation from the Queensland Department of Transport and Main Roads. Ask about their experience with your specific modification type and request references or examples of previous work. A reputable provider will be transparent about the certification process, timeframes, and costs involved.
Be cautious of providers who offer to skip steps or issue plates without conducting a thorough physical inspection of the modification. Every legitimate mod plate requires a hands-on assessment of the completed work against the relevant codes of practice. Cutting corners during certification can leave you exposed to defect notices, registration issues, and insurance claim rejections down the track.
Areas We Service
Our Glass House Mountains workshop is centrally located to serve vehicle owners across the Sunshine Coast, Moreton Bay, and North Brisbane. From Caloundra and Maroochydore to Caboolture, Redcliffe, and the northern suburbs of Brisbane, we regularly certify modifications for customers throughout the region. We also welcome clients from further afield across Queensland who are looking for a trusted approved person to handle their mod plate requirements.
If you are unsure whether your vehicle modification requires a mod plate, or if you would like to discuss your project before booking, get in touch with our team. We are happy to provide guidance on compliance requirements and help you plan your modification from start to finish.
Sunshine Coast
Moreton Bay
Helpful Australian Resources
The following links lead to official Australian government and non-commercial resources relevant to this service. We recommend reviewing these for additional guidance on vehicle modification regulations and safety standards.
Official TMR guide to vehicle modification requirements, including when a modification plate is needed and how to find an approved person.
TMR QueenslandNational standards for vehicle safety, emissions, and Australian Design Rules that apply to all vehicle modifications.
Australian Government — Department of Infrastructure
