I bought a u connect 8.4 rb5 radio for my 2013 dodge charger. it came from a 2014 dodge charger but it has no screen/ touch interface. I see a 8.4 screen that was for a 2013 dodge dart rb5 is the screen the same will it fit for the charger it looks the same. Why would dodge make the same size part doing the same thing with different plugs for adifferent same year dodge but different model? ???