To night was fun installing the NACA scoop for the cabin heater! Had to trace out the cut lines and cut a few times to get the right size. I was happy with the way it turned out. I tapered the back of the scoop were it touches the fuselage intake to get max air flow. I will do the lay-up to keep it in place now and work on the out flow next. The heater will have to be sealed up with flanges and weather stripping foam to keep the air from escaping in the fuselage and not true the heater/cooler.