2011 is still the old style touch screen and not the current 8.4” screen correct? If so, all you need to know is that there are two different interior bus speeds. If it’s the right bus speed it’ll work regardless of part number. I add touch screen radios all the time. I know ram trucks and minivans are one bus speed and that the 300/charger/challenger are the other. The rest I have to sit down and look up as needed. Some need the dealer to generate a 4 digit pin to unlock it after a radio swap. Some don’t. Personally I think the nav is over rated and I’d go with a non-nav touch screen to replace it. I get the ram/minivan touch screens for $125-150 each and the car ones tend to be a little more scarce.