I'm interested in how I can move air to the oil cooler and intercooler for pressurization.  Any good ideas out there that work?  Does it work well to take air off the intake plenum or is it necessary for another scoop and ducting.  I would like to hear from those who are in  the air and their system works.  Will a 4" wide naca duct work on the bottom of the scoop?  Gary Garratt 4P Turbine,  San Martin, CA 408 888 1500