Not being pedantic, just clarifying, if they got their P's before July last year, they're on the old rules which means a car only can't be driven by a p-plater if it has more than 125kw/tonne AND 3.5L capacity/tonne
So unless it's an LS2 or 3 which obviously the old crap boxes aren't, then they fall under the 3.5L/tonne, and thus can have as much power as they want.
Oh yeah, and SA drivers are the worst by far...they're NUTS...
Won the title of worst driving state for the 7th year in a row this year too
Interesting article on it
here