Best Radiator for a Desert Climate

[lbear]

Being in the desert southwest. Cooling the engine is top priority. The OEM radiator is really thin, has only 1 row/core and having 91k miles on it, it's starting to show its age and is having a harder time keeping coolant temps down. The fans are working like they should.

Any aftermarket radiator that has a better/higher cooling capacity, that someone can recommend?

Maybe something that came in the supercharged 3.8L ?