I have a genuine AMG ducktail on my facelift car. It’s the Gen 2 duck without the AMG letters embossed/molded into it.
It does fit fine but the chrome handle/license plate light holder piece needs to be modified. It’s easier than I originally thought as the piece is not metal, it’s chromed plastic. Itcuts like butter with a jigsaw to fit behind the ducktail and seal up the hole and still provide lights for license plate.