You can purchase a "double din" after market mount that would be a compatible replacement for your factory in dash 6-disc changer. Your reputable (or seedy) custom car install shop can override the settings, or "accidentally" leave it so that you can wire it yourself. Thereby excluding them from any legal liability. I had my guys do it for me. They had to place a 2 inch screw through my HiHy's speed sensor, allowing the nav system to think that the parking brake sequence was on. If you are interested in who did the work on my car, please let me know. I would be happy to share that info, but it can be done! I have a pioneer Avic-D1 unit, but the new Avic D-3 is quite nice as well. Best of luck!