I don't have a pic, but on my J-3 with the ASP (Mag) 160 twin, I just cut out the faux cylinders and kept the eyebrow air scoops in place, opening the scoop portion. I split the cowl horizontally from the middle of the opening for the prop hub, straight to the back. I used the four built in screw mounts at the rear and added small blocks of hardwood just aft of the rear cylinders and right in the middle between the prop hub and the front of the cylinder. I used the small #2 hex s/t hex screws and dabbed some cub yellow paint on them. The cowl stays firmly attached and the cut lines are fairly invisible. Not perfect, but it works for me.