[stephen low]

Miniboy

The 3 year build rule starts as of the date of your major purchase towards the project. This is usually the chassis/body and you have 3 years from that date in which to get your car a VIN number, which effectively means registration, and remain compliant to the ADR's in force as at the date of your major purchase.

Moving beyond that 3 year timeframe seriously puts you at risk of having to meet whatever subsequent ADR's, if any, that have been promulgated in the meantime. If anyone can comment on how lenient or not VicRoads are currently on this please chime in!

As I understood it, the engine of choice must too meet the ADR's to suit your build, definitely the BA but I am less sure of your Darkside options. But if current Gen3's are the same as that made earlier I cannot see why as the same emissions testing would have been achieved by GM.

The regulators are trying to get us to use engines meeting current emission specs. so it has to be the standard engine and setup from a car compliant to the ADR's you are building to.

Hope this helps.

Cheers