I have heard all the pros and cons to the aircleaners in the front of the engine bay compaired to in from of the radiator so don't go there. BUT
Doesn't anyone ever drive there cars in the RAIN?
When the car your following on the highway or that passing semi hits a huge puddle there is know way your not going to take in water rather than water vapor!
It's just not worth th chance to me.
Enjoy...
Mike