If you're using TRUE aeroports with a nice large flare on the end (not just a round piece of PVC pipe that I've seen some people calling "aero-ports" lately) then you can get away with as low as half the port area. It's recommended that you use 12-16 sq in for a regular port which puts you at 96-128 sq in. With a legitimate aero-port, you can get away with 48-64 sq in worth. Just a quick FYI //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif A single 8" aero-port (kinda hard to find though) is roughly 50.3 sq in of port area. A nice alternative would be two 6" aero-ports for a grand total of 56 sq inches (28 each)
Hope this helps //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif