I just looked at Jim's page and I don't think any of his adapters will work with this big Bendix hub! What would you do--loose the cool cranks and CCM sprocket and add a shift kit or keep them and go with a properly set-up rag joint? Does Jim do custom work?
Wow, that's an awesome looking vintage bike. And in good shape too! I wouldn't have the heart to add an engine to it myself if I owned it. I'd try to find one in need of a resto. Then I wouldn't feel so bad about modding it.