P71 Crown Victoria?

I am thinking about buying a retired p71 crown victoria. Anything I should know before I buy? Or I would love some input on what to buy from 4-6k dollars. I want something that will last, a car where parts arent too hard to find for it, and something i wont get killed with by the insurance company. I am only 16 so keep that in mind.

Well just remember it's been driven very hard by people that didn't own the car.