If you provide you VIN number we can see exactly what you have.
Below are the parts for a tailgate, there was never a chrome trim available as per you pic, it was always body colour, so not sure where that has come from. Part in question is identified by reference A43400 in the pic.
As for the aerial mast a genuine one for a hatch is around $30, can help getting one if you need any assistance.
LW2 Focus Tailgate.PNG