Ahaha Bozz mate! welcome back, haven't seen you on here in ages.
I'm 25 and daily drive an R32 GTS4 which looks fairly standard except for mismatched wheels front and back. Only time I've been pulled over "non randomly" is when I made the mistake of driving my mum to church in Noble Park shortly after the riots... my car got the once over and I got defected for bald tyres, which I had been procrastinating on.
Other than that I've been waved into a couple of breath test's and I've been waved past a couple too. In general no hassles at all, and I drive through knox, dandy, thomastown etc all the time. Being on a full license with no loss of points helps a lot I guess.