I found these black anodized Coupe door frames on Ebay priced very reasonably.
They slip right in.
On Targa doors, this notch has to be removed to slide in the Coupe door frames.
This faciltates the forward part of the frame to sit flush with the inner door.
Using a Sawzall and finishing with a file, the frames fit perfectly.
The car looks so much like a Coupe now, when a friend came over last weekend, he said, "nice Coupe", LOL.
Still much to do.