Dodge/Chrysler/Jeep vehicles have an available option for the radio called a MyGig Entertainment System. There is a model with navigation and without. Both models have a hard drive that allows you to store your music on it, without having to change or keep cd's in the car. On the navigation unit, the hard drive stores all of the maps, so you will not need to have a Navigation DVD constantly in the unit. You can find out more here: http://www.dodge.com/en/owners/mygig/index.html
google lockpick v2 adaptoer. The company makes a kit but need to look at their site to see if your vehicle is compatible
Nope, units, what are not equipped with GPS ability, will stay that way. If GPS is required, another unit must be bought, what has the ability.