Cooling the gascolator ( fuel system in general ) is a good idea. I cool my gascolator with a 1/2 SCAT tube coming off the air in the baffled area. I see no reason why your NACA inlet won't work, but don't put any stock in that. Check http://www.vansaircraft.com/index.htm For NACA vents and other things. They have good prices on stuff.
See N64KR at http://KRBuilder.org - Then click on the pics See you at the 2009 - KR Gathering in Mt. Vernon, Ill There is a time for building and a time for FLYING and the time for Flying has begun. Daniel R. Heath - Lexington, SC