I too am interested in doing this. The only thing that I have found is the Lockpick, an aftermarket add on that enables video and audio out from the radio, I picked one up for less than $200. Only other issue is that the factory headrests are active head restraints, you can remove them which is fairly easy to do, but doing so causes the airbag light to come on. Maybe someone knows how to bypass the active head restraints, I have looked into it, but haven't found anyway to do it. If you figure it out let us know, I know that there are several people interested in doing this.