Best way is go go pick out whatever double din unit you want, and pick up the install kit. I know a lot of people hard wire their stuff, but the install kit makes it pretty painless. The install harness has plugs on one side that go to the cars harness, and the other side has wires that you match up with the wires on the radio, they're usually color coded or at least labled, you'll have it done in no time
