Dave,
I have some very rare, most likely, not seen before diagrams of various versions of Air-Way's with twin motors that never came to fruition. They came my way by various folks that used to be in high places with Air-Way.
When I return home, I will scan them and post them. They may even end up in a newsletter some day! It is amazing what the Air-Way engineers came up with at those particular time frames.
Charlie