I have a 71-up floor shift steering column with key. A couple of the wires from the ignition switch are non-functional at the connector. I have a NOS ignition switch for it it. The plan is to install the switch, re-paint and rebuild the coupler as I have time for it.
I have a Midland Ross dual diaphragm as depicted in your picture (year unknown as they were used in several years). Other than the small brace that gregpurcell showed in his eBay listing, it's complete with the rest of the stuff. Functional? I don't know; that's why I was getting ready to send it out to Booster Dewey so it could be used on my 65 Barracuda. The larger Midland Ross is much more available than the dual diaphragm units and am not sure why that is.
I can take pictures of everything if needed.