A quick update on this project. I found that I already have a reversing adapter for Pentax screw thread mount with 49 mm male thread filter threads on the other side. I have epoxied the ring into a lens board in a position that will place the f/stop ring to the top side of the lens I intend to use to make it easy to set. Also the auto/manual dial is up. The lens focus can be used as well. All I need to do now is make some sort of lens shade and I will be ready to test tomorrow.