I have a 2012 Journey Crew with satellite radio and the smaller info screen. Would these two items be all I need to upgrade to the 8.4" screen w/ Nav? Thanks! 2012 GPS/TV Screen/Info Center Dodge Journey DISPLAY W-NAV 2012 Radio Dodge Journey AM FM MP3 DVD NAV RBS OPTION Also, what is the difference between these two items?
receiver, navigation, AM-FM-CD-DVD-MP3-HDD-navigation-WMA (RE6) receiver, navigation, AM-FM-CD-DVD-MP3-navigation (RB5)