Snorkel Scoop advice

I am missing a few screws on the bottom of the scoop and trying to find a way to replace them. I purchased the screws from one of our vendors here last year. The holes are too big for the screws so it appears a previous owner drilled and put larger screws to hold the scoop on the car.

Any idea how to fill those holes so the screws would stay?

I tried fiberglass and resin and it gave way pretty easy. I was thinking of a JB Weld type material but not sure how that would adhere to the scoop.

Any advice?

Craig

Nutserts maybe?

Try browsing McMaster-Carr's online catalog.