Whats wrong with the stock fan?Does your engine overheat?Perhaps one that is quieter or pulls more air in would be better, but if the guys with superchargers or turbos dont have problems what is the value?My way of thinking is that Toyota engineered their vehicles pretty well.
Do you need it because of the supercharger? I know Toyota makes great cars, I'm just looking for items I'm going to need when I build that second engine. Not sure if I'm going turbo or supercharger yet.