Nothing's wrong with having a NA I did import my own R33 GTS when I first got my P's... So you can't say I didn't try lol, unlike some other people out there.
FYI, I paid for my own cars, parents didn't splash anything at all, only thing they splashed was words to tell me not to get a Skyline lol
But back onto topic, I mean if one were to buy a turbo Skyline and drive it on their P's, it's their choice, they should know the penalty if caught and should definitely cop it on the chin, so trying to find a legal excuses to apply for exemption to drive an illegal car is just silly, because VicRoads isn't stupid....
And for those who did get an exemption for driving a turbo Skyline on P's, well good on you. But for those who are trying to find an excuse, then good luck.