I positioned the NACA scoop on the left side of the fuselage, and drilled and clecoed it to the skin. Then I deburred and dimpled the skin, and countersunk the plastic scoop. Since I'll be installing the scoop with rivets, I needed a backing plate for the flange of the scoop, so I fabricated one out of scrap 0.20 aluminum. I match-drilled the ring and primed and painted it.