As many people are aware, the NSW rules for vehicle modifications no longer have a "capacity limit" that cannot be exceeded. Basically, the bigger the engine the more has to be done to prove that the rest of the vehicle (chassis strength, driveline, brakes, suspension, handling etc can handle the weight, torque and power of the engine. That means, for example, an early Holden, Torana, Cortina, Capri etc that has been set up for a small V8 can now be certified with a larger version of the same engine, &/or potentially turbocharged or supercharged, provided that it meets all of the requirements.
In reality, not a lot really changes. The need to prove adequacy is the hard part. Staying close to the old capacity limits will be fairly easy even if it's a little over. Going way over will be quite challenging
im going through the process of engineering a lsa enine in an lh...
you can also supercharger/turbocharger the original largest engine (308)