I live in the San Gabriel area, way far south from your move here to Cali, its great here. So many kids, posers, ricers, hot rodders, chunties, and just plain ol jallopies i'd say no harrasments with no bumpers here. I think personally where i live, there is too many cars that are modified in so many ways the cops, and sherrifs dont really harrass. Just so as long as your not fucking around too much.
Last time I got a ticket for something "modified" related was no front plate, but it was years ago, and my car was slammed to the ground, i running an open header, and had blacked out tint, and a motor that didnt match my vin# to the car (he made me pop my hood).
To my defense, (about the open header) i was on my way to the muffler shop from my mechanics, he had just swapped the motor out and of course it sounded pretty awesome, so i was hammering down on the throttle SGV police said he had heard me blocks away....