I have a 2010 town and country and I would love to add ves to it for the kids. I have the res radio cd mp3 satellite radio. I have searched local salvage yards to find the necessary parts, but am steered in wrong directions. I have a few questions. Can I just install the over head monitors with the dvd player that goes into the pocket below climate controls and get this all to work? Or do I need to upgrade the radio to an RBZ in order for all this to work? Thanks for all your help