I'm in need of a cheap pair of factory door subwoofers for a 2012 Shaker 500 system. Speakers from an earlier model will be ok, as long as they fit and are plug compatible for the dual voice coil (DVC) type speaker connectors in the doors. 2011's are probably the same, but I don't know about years before that.
I read that 2013's are single voice coil (SVC) so they would not be compatible with the factory harness, if this information is correct.
Have you checked junk yards, I know my 2012 Gt was totaled out and is sitting in a junk yard in Hammond Indiana right now waiting to be parted out, You can find anything on the car that is usable and it would be cheaper that route.
My car was totaled due to front end impact but interior of car was unharmed.
2013 Black Mustang GT/CS, Glass Roof, 6sp Manual,355 Gear, Shaker Pro Audio
Future Mods: Window Tint, Boss 302 Side exit exhaust, MGW Shifter............?