Need pics of stock '64 225 carb/kickdown linkage.

No. "Factory air" in '64 was just factory installation of the same under-dash add-on A/C unit you could get installed by the dealer. New for '65 was a combination A/C + heater which covered up the area of the firewall where the rod would go through, necessitating the cable. Your '64 would've come with the rotating-rod setup. Here's the '65-'66 factory-air linkage setup. If your car has this, someone put it there after the car was built.

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Thank you very much for the information. Are those diagrams from the factory manual? Are the linkages attainable in the used market or are they made from unobtainiam? I also need to see how this AC system was originally set up on this car. It has a "Frigidaire" sticker on the inner back window. I have a couple of airboxes but don't know exactly what is missing from the AC system. You can see the dryer and what I think is the expansion valve mounted on the inner fender well.