Not quite correct... It'd be around 6500cc (maybe less, depends on model).
VSB 14
Either way each state then carries it's own laws on the matter so it could be less again (or impossible).
Vic being a VASS Engineers, I've spoke with some a few years back and i did ask a similar question. They said no way would they be letting an injected V8 pass in a lighter car than it came with, especially given kw increases... So as i said earlier it comes down to the state you live in, and knowing the laws and contacting the engineer first to find out what they will need before doing it. could even depend on the engineer you get and if they are willing or not!