Air to Air is by far the way to go for the street, but I did not have any room at the front of my 37 unless I would redo it completely. Eventually I may do away with the intercooler since I feel 400-500 TRUE HP is the most you can really use on the street (I'm not a street racer)
Air to Air in front of the radiator is all thats needed on the street no sprays or anything else.
Built a 296 cu in small block street roadster for salt flat racing, with air to air that made 996 HP, air to water is only needed for all out high boost applications.
Just my thoughts-Harry