Mate I'm a victorian like yourself. And I was also responsible and put a 2TGEU in my car instead of a turbo 3TGTE coz of power/weight ratios.
My comment to you would be:
Its all fucking bullshit mate !
I've spent 2years watching as P plated WRXs/V8 commodores/rotaries get no penalties from police.
For some reason the cops do SFA. I had a friend with a VX SS ute (5.7lt, 225Kw) who got pulled over for a random breath test and they did nothing about a 19yo driving a high powered vehicle.
I think its disgusting, and its got nothing to do with me not opting for a hight powered engine. It just isn't safe for everyone else on the roads - why else would they have introduced the law?