If I wanted to install the 2008 stock nav with blutooth in my 2003, apparently I would need a new ecu as well.
Anybody know what all I'd need to replace to get the newer stock hardware? Surely they "integrated" the electronics system this way so I'd just buy a new SC when I want the upgrade badly enough, but wondering what the cost would be to keep my 2003 and get new elecs.

Also, does having blutooth allow me to to have real time navigation around traffic jams coming through my phone, and have the nav screen function as an external monitor for the phone?