Recently the LAC (local area command) from Camden relocated their highway patrol unit to Picton (where I live). I rarely was pulled over before this unit came to town, but I am regulary pulled over for "RBT's" now. I have come to understand from my constant run ins with the local coppers that there is another silver R33 doing the rounds in the local area, acting the fool all the time. Apparently I am often mistaken for 'that' other car...
I'm not a P-Plater and have never been fined for any driving offence. Initially I was put through the defect runs, pop the bonnet, run your revs to 3500rpm for noise check, but now they pull me over and have a bit of a joke.
I'd put the sticker there, but not advertise it... It may make them more pissed and try to pin you for things rather then try and scare a red P-Plater into being a good driver (not saying that you aren't, but there is a negative social stigma relating to red-p's and supposedly quick cars)...
If they are always pulling you over in the same area, they should get to know your car... oh and dont play F*!k the police with the windows down full ball!