35 Terraplane disappearing wing windows

Hello- I recently purchased a35 Terraplane 2dr Brougham from an estate. A project that will need a bit of work.
The left side assembly is complete. The right side is missing a  piece. I will show  the  left side picture of the part I need for the right side. (hope that Makes  sense)  Also will conventional wing window assemblies fit in place.
 Thank You for your help.

   Bernard Kyhl Het# 17552
    kbkyl@aol.com