I have a 2002 Grand Prix GT which is basically stock. I have currently upgraded the DIC to the digital one. I'm gonna be putting in a HUD in the summer. I wanted to upgrade my mirror to one with the compass and onstar but don't care about hooking up the onstar. Is there any way to hook up a mirror like that? Also is there any other upgrades that can be done to make my car more loaded? I want to upgrade the seats at some point too.