I'm considering to purchase a '92 850i from a dealer. I asked the dealer to provide me with the ownership history and they claim that they can't due to privacy considerations. Can any of you advise me on how I can find out as much as possible about this 850's heredity before I proceed with purchase? I'm looking for the following info: Names and contact info of previous owners; Full service and warranty history; and any other info that one should have before making an investment of this type. Thanks... - John