Alright I got the adapter installed and its actually working out really well. The people put it in for $50 and wired the iPod cable into my glove box.

Heres how it works: The AUX button is now CDC when the iPod is plugged in. I can pick the playlists/songs I want using the iPod controls and then I can skip songs and go back to songs using the controls on the NAV/steering wheel.

Its not exactly what I wanted but its a lot better than just an AUX cable to me. Better sound quality, its always charging, it pauses when you turn the car off, etc.

Let me know if anyone has any questions!