Wondering if a factory stereo from a 2016 Leaf S (which does not have the AUX jack on the head unit itself) could easily swap into a 2015 Leaf S with the factory stereo (which does have the AUX jack right on the face of the stereo). I don't mind the factory stereos in the S models (to 2017, of course), and I may swap the entire thing out for a CarPlay unit. But, I'd like to keep the factory look, not lose the backup cam without a hassle, not have to swap out the 2ohm factory speakers if I change to an aftermarket head unit. It looks like the 2016 S has the AUX jack down on the panel where the USB and seat heater switches are. And one more question: does the factory 2016 Leaf S stereo do Bluetooth streaming, not just Bluetooth phone calling?