Hopefully not-too-naive question: are you trading in your old car? Do you have any kind of contractual statement about the trade-in value of your old car, months before the new one ever shows up? Did you promise to have the original factory stereo back in the old car? I'd be awfully nervous that the dealer would try to take it out of my hide in the trade-in. This seems to be a general problem with ordering your car for delivery N months in the future, but it's something I'm contemplating doing. Maybe it's easier to try selling your old car privately?