Sorry to hear about this shit, I hate hearing about stupid thieves getting away with stealing shit. You'll get it back eventually as long as you file a police report, whether or not its stripped is a different story.
This kind of shit makes me want to buy a brand new car with OnStar/GPS capabilities just in case I ever get jacked. I've had shit stolen from me in the past, and had my Explorer broken into 5 times in the past 4 years in college, and no matter what you do - if a thief wants what you've got, they'll take it.
Fukk thieves.