What would you do?

As far as answering your question, probably 'B'.
Now my question - are you sure that's Corvair rocker trim? My old '69 Dart had that style of rocker trim just below the doors and I know it was from the factory.
My current '69 Dart did not have it, but I liked it on my old Dart so I'm adding it to my current project.
Yep. Bought new clips for the molding, then realized one side was different. Didn't have a matching pair except for some Corvair pieces. I've had a few Corvairs (okay, more than a few) and it seems the leftover parts never seem to run out, lol. I'll never be able to escape my Corvair past, haha!