Here is a 67 Todd bought from GTSjohn that came with all the AC missing. We found this car to be a total mess when we got it home. So the car was dismantled to remove all the scrap parts put in to sell it. I installed the AC and all parts when reassembled . Also a 150 speedo, Factory Tach. and converted from auto on column to 4 spd .
If I were you I would gather the parts and reinstall the factory AC. I have plenty more parts to do other cars. If I was installing AC in a non AC car I would use Classic Air. No cutting or drilling and can be converted back if wanted with no signs of the conversion.
Those plastic switches fit from many years and model mopars. They usually split from pushing the buttons to hard but can be repaired. I have others coming in for the same work. 67 is a different switch but 68 to mid 90's can be used with a one wire change. This one is out of a 89 dodge omni.