Do you have an XL or something??Side note: if you go F-150, ya might want to go up to a year where they switch over to a stereo unit which makes use of an in-dash screen on the unit itself. The 2014 I have, the stereo ties in with a small dot-matrix blue-led display up top and I dunno... could *possibly* present some challenges if I ever opt to upgrade it.
To that regard I'd just say make sure you get one that can play MP3's off a thumbdrive! Makes it easy to have folders that are kid-friendly, then you just opt to loop around within that folder on playback when they are in the car.
Mine runs off bluetooth