Open72, does your transom plate's dimensions differ from a stock TRS inner plate? The ears for your plate look like they might be a bit longer, but the photo might be deceiving.
Provided your application on the inside of the transom uses standard TRS components (other than the transom plate), such as the tranny tailstock, a Konrad outer transom assy should bolt right up. When they did my application, they just unbolted the transom assy studs and slid out the TRS transom assy, and plugged the Konrad outer transom assy in place. All this while the motors, tranny's and inner transom plate were in place. These guys must be contortionists to be able to get to transom assy nuts on the inside, but they made it work.
As long as your tailstock output ends up in the same place as it would with a stock TRS inner plate, you should be in good shape for a Konrad outer transom assy.
Fred Sparling is Konrad's application engineer. He's FSPROPELLOR on this board. I'll call him and ask him to chime in with additional info.
BTW, that's a nice looking plate you've made.