Jim:
When I had mine done, the new shades ride down the front surface a new A Pillar, made to fit. It isn't the same shape as the original, it has a surface parallel to the plane of the shades, for the ride, and at right angles to that, the surface you see. It has one screw at the top and one at the bottom to hold it in place and is covered with a vinyl material very close in colour to your original.