Cant say ive ever had any issues like above but I love driving my 34 and am happy to pull over for the police when they flash the blue and red at me.. Lets them suss out the car, see nothing is illegal im not carring dangerous goods or weapons and then they can just take it all in and perv on the car..
If you treat them with respect they will return it, however seems not everyone does this so if you happen to look like another "type" of person you in for shit. Yes some police are racist but I believe its because most "wanted" races abuse the police. Im sure you would return the favour when your a officer.
I dont speed and my friends often abuse me for doing 2-3km under the speed limit, I still get there on time or even early I just learn to pick the quickest route. Its obvious with a skyline your a giant target but at least one thing is for sure if someone manages to pinch your line, 90% change they'll get pulled over! lets hope its reported by then tho :S
I wouldn't sell my line for much .. except maybe the new RS4 or a track spec 350z but shit damn its a buzz to drive, cops or not