Install the scoop from the underside. In other words, flange goes on the underside. That's the way we do the 6 pack scoops too. Use panel adhesive on the underside, and use some big headed pop rivets installed from the top. From there , use a bondo type puddy to do the molding. We don't make the 68 Hemi scoop with a flange. Ours have studs hanging down and you can shape it to fit the hood. I am Sled City Fiberglass.
