I'm working on getting A/C into my Falcon. As prep, I have been looking at various pictures that I've collected of A/C in early Falcons. I have some pictures of a 62/63 Falcon that has a double sheeve (pulley) for the water pump. I can't say that I have ever paid attention to see if this was a rare aftermarket item or if some vehicles with the small six were factory equipt w/ a double sheeve on the water pump. I know there was a bolt on 2nd sheeve for the harmonic balancer (I have one of those) but I am running into packaging issues w/ the bolt on 2nd sheeve on the harmonic balancer and the fan blade and the radiator all trying to share the same space so being able to run a second belt off of the water pump to the AC comp looks appealing. I need to look into fabricating a double water pump pulley if I can't find one readily avialable.