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I would also go with the Edlebrock water pump, or a similar high flow unit. As I mentioned earlier, I use a 3300 cfm rear puller fan that has made a big difference in air flow. Combined with the front shroud, the larger flow fan with a rear shroud that overlays the entire rear radiator surface made the biggest improvement for mine. When the car is idling or just parked turned off, and you rurn on the big puller fan and stand beside the engine compartment with the hood down you can feel the "breeze" on your feet that the fan creates. But it is pretty quiet. Instead of the normal high pitched sound from so many other fans, it makes a much lower pitch and is not objectionable at all.

The figures you gave for the stock pullies seem a little smaller than I remember them being.