There are a lot of (aftermarket) fans that fit. But they don't move the air needed to stay cool. From your location (Arizona) you will need to move a LOT of air to stay cool. In order to move a LOT of air you need a couple of things. A fan with enough depth that the blades can hook a lot of air. This makes it difficult to package with the stock accessory drive. The other thing is it will take a lot of amps to run a fan that can move that air. Now you are looking at an electrical system upgrade.
The 5.0 Explorer accessory drive with the clutched fan works so well it is pretty much the go to answer for Broncos today. I was just at a couple of pick a part yards in Phoenix yesterday and saw several that were ready for harvesting. The only glitch, the crank damper is a different balance than the early engine. Stop by Randy at Driven off 35th ave and they have a conversion pulley to use your old 3-bolt damper and make it all bolt on.