What SB water pump is best and why?

I plan on changing my water pump.

The one on my IRON HEAD 340 was for a factory AC car. My thought it was the better to use since I wanted to install ac.

After talking to Rick Allison from A&A transmission he told me the AC cars used a pump that was less flow and a smaller pulley to increase speed for air flow thru radiator

So to try and get it to run even cooler (already changed the March underdrive pulley) Plan on installing a new high flow pump. HELPED BIG TIME.

The radiator is a BE Cool aluminum made for A body and up to 650 HP engine

Was looking on line and JEGS site stated for one of the pumps I was looking at said to use the 6 blade pump with iron heads and 8 blade for aluminum.

So WHAT ARE YOU USING and does it keep your car temp steady in heat and idling in traffic

OH, I also have an electric fan