1slow370 does make some excellent points. I have only seen air to water intercoolers for positive displacement superchargers. Vortech does have aftercoolers that are air to water, buy they are bulky and won't fit. Redesigning a manifold is definitely not necessary for a centrifugal blower.
Using a positive displacement supercharger on a VQ37VHR is not out of the question:
http://myg37.com/forums/picture-shar...rom-japan.html