Everyone who has tried has been told that you can't add this system to a car that didn't have it from the factory.
The built in systems are much more integreated into the car than after market ones.
Button on the steering wheel for voice command.
Microphone in headliner for voice command.
Connection to steering wheel and wheel speed sensors to suppliment the GPS when you have low signal quality.
And supposedly it uses a completely different wiring harness.
