Added the side flanges for the Skybolt fasteners. These pics show 8 on each side and later I added another one at the front so the final layout is 9 per side. With the flanges in place, I put the top cowling side inside the flanges and drew an outline showing the placement for drilling the 1/2" holes. Once those were done, I powder coated the flanges and installed the receptacles in each flange.