Good morning and Merry Chrisgmas! I recently purchased my first Sport Trac, an '07. It came with an awful headunit / stereo the previous owner installed . I really want to find and putback the stock Navi screen. Ive been searching a few 07 STs at local junkyards it also looks like the 07 Explorer and 07 Mercury Mountaineer used the same thing . Does anyone know a range of years and models this Nav unit could be interchangable into my truck? Or another option of $150 or less to install a new unit? I've read a lot about installing a backup camera and using Lockpick to hook it to the factory nav screen but open to other options if not too expensive.