There is a nine bladed fan that will bolt onto the Magnum 5.9 V8 clutch fan in place of the stock 5 blade. I have the part number somewhere. There is a 7 blade fan too.

I am running the Evans NPG waterless coolant that would allow you to run +330 degrees without boil over in severe desert conditions. I have used NPG since 1998. I partially blocked my bypass hose down to 3/8 th inch square opening to increase flow to the radiator. Evans officially recomends a high flow pump instead of stock.