he can get the RB1 or RB4, i have the RB1 and like it allot. i added it to my 02 limited
only down side is no touch and the updated maps cost over $100 each time unless you get a hacked like most of use do. but i have learn to live without the touch after coming from a garmin which i still use and have been getting hacked disk i have the most updated AI with the in-motion and nag screen hack.
also when installing first disconnect the negative battery terminal
and after, also changed the bottom black part for the heat seat switches and tray to wood grain and look nice too