so it seems that the back of the 64-65 and the 66-67 tempest ignition switches are the same, all 6 connectors match. When they had AC, there would have been an extra connector (a ground actually) in addition to the one ground connector already on the 6 connector back. So one could take a non AC switch and use it on an AC car if they jumped the one ground into the second ground wire on the AC pigtail.
now the 6 connector (non AC) pigtail will fit all 4 switches, it fits on fine and does not interfere with that 7th AC connector. There would just not be any wiring going to that 2nd ground connector on the 7 terminal AC switch.
That pigtail shown is the only one I have but if lil65gto can repop it for all of us, I would consider loaning it or maybe getting a digital scan? so it could be 3D printed. PM me if you have any ideas. Hope this helps.