Just thought I would throw a bone out there to find out how much interest there is in upgrades to the audio/video systems. I am intersted, but not an expert. If anyone has done any upgrades please share. I would like to get an idea what it takes to upgrade without putting in a new head unit and keeping all the functionality of the navigation screen. Mainly I would just like to upgrade the speakers and subwoofers for better bass and clarity. If there is enough talk on this subject it may also be a good idea to have a seperate category for electronics audio and video. Just some thoughts.