The mileage is the real killer @ that price. As you may be starting to notice, just about everything could be ready to go south with 143K.
The fact that it has the police package also should be a red flag because whoever owed the car most likely drove it like they stole it.
You best bet would be to take it to a mechanic you know and let him go thru the entire car. If the seller balks at this idea, RUN, don't walk away from this car unless he really comes down quite a bit on the price.
