I have 2006 Toy Tundra Crew Ltd with the jbl Navi and the Rear DVD ent system. Is it possible to make the navi play dvd's? Either from the Rear DVD system or the Navi itself? What about a Backup Camera? 2nd question, I'm looking into a good bluetooth for the truck, installed, what is best and where is the best place to mount either the screen, (for the parrot) or otherwise?