Are you looking for factory looking install or daily driver? Most of the bosses were broken on mine and I just made a small wooden template and affixed it to the proximity of the originals. After it was dried I opened up a slightly larger than 1/4" hole. Drilled two perpendicular holes on the recessed nut then filled the hole on the boss with some epoxy, dropped the recessed nut in the hole and tightened a stud into the nut.

At higher speeds those factory deals would come apart so I beefed it up. Over 120mph and my whole hood was shaking those scoops never vibrated loose...

Not really an answer to the question but make sure those bosses are intact and can take the stress.