Ok i got good news for those who want NAV...found this,sounds like the rearview camera comes included with NAV.
Navigation Package
# Nissan Hard Drive Navigation System with 7.0" VGA touch-screen monitor and voice recognition
# XM NavTraffic® and XM NavWeather™XM NavTraffic® and XM NavWeather™ [1]
# Zagat Survey® restaurant reviews
# RearViewMonitor [2]
# 9.3 GB Music Box® hard drive for digital music storage and playback
# USB connection port for iPod® interface and other compatible devices [3]
This package deletes the in-dash 6-CD changer.
[1] Required XM Radio, XM NavTraffic and XM NavWeather monthly subscriptions sold separately. Subscriptions governed by XM Customer Agreement available at xmradio.com. XM NavTraffic only available in select markets. For more information, see
www.xmradio.com/navweather.com.
[2] The optional RearView Monitor is a convenience, but is not a substitute for proper backing procedures. Always turn and check that it is safe to do so before backing up. The RearView Monitor may not detect every object behind you.
[3] Driving is serious business and requires your full attention. Do not operate any devices connected to the auxiliary input jacks or USB input while driving.