I have the 6CD player with Sync without NAV and without SONY. I have a FX4 2010 F150. I want to upgrade. Which is the newer OEM HU I may Install without much trouble? Truck already has a 5 Way Kenwood amplifier with sub and also a LCQ1 between HU and AMP.

I'm looking to get the NAV capabilities and also a nice interface between my iPhone and HU.

Thanks!