Got some updated photos from the rear window corner repair... I was able to acquire original upper quarter panel sections in the area that meets the Dutchman/filler panel. As you can see, the original metal had heavy corrosion due to a rat next on an unpainted surface. For a refresher, the section of the upper quarters and Dutchman/filler panel never got paint on them from the factory since the car was painted after the rear plug was installed. Kuddos to Smitty.