Project "Chihuahua" '65 Formula S Restoration "Estilo Mexicano"

I saw a table in a factory manual somewhere, showing that engines for the a/c equipped cars did indeed have a water pump pulley which was slightly smaller than the crank pulley. So yes, A/C cars did have an overdriven water pump according to that table.
This is also related to the use of a 6 or 8 blade impeller in the water pump, but damned if I can ever remember which is the AC or non-AC pump...