Thanks for the helpCatalog part number for that cover is 20225600, just as an FYI.
I don't know anything about Pontiacs really. I do know the rivets for these sort of things are specialized beveled "blind" rivets that don't leave anything behind to fall into the trunklid crevice inside. USUALLY, but not always, the covers come with the rivet package. Unfortunately I don't know of the exact size you'll need or the GM part number.
$9.60 for a set of 6 of these. In case you were wondering. Ask them if it will actually work. I have no idea of the size.
GM Chevy trunk rear lid lock cylinder emblem cover rivets 6pcs countersunk rivet | eBay
You are buying six (6) NEW fasteners. They are countersunk blind rivet-pin type (pop rivet) for trunk or rear deck lid lock cylinder emblem cover. These rivets will mount the emblem lock cylinder cover to the trunk or rear deck lid.www.ebay.com
Grainger sells them too, but what size do you need? I don't know.
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