RE: Fairings at the wing root
DA your right I did add the side area of the engine above the carb to that figure and the head area would have already been there. So I am adding around 13 inches to the side area, my concern was that all of that added area is well ahead of the stock COG and may be an issue. I have planed to add about 3 square inches to the rudder already, just from what I have read about the mods others have made to the plane. I was just afraid that adding so much side area forward of the COG might cause some issues in level flight.
I got to stop trying to over think this thing...