67 Dart GT Rocker Molding Trim Clip???
0.285" = 9.14/32" ~= 9/32"
What an odd size!
Factory punched hole?
Any chance there is 0.030" of paint / rust on the ID of the hole making it a 5/16" (0.3125)
Well either way I have a better starting point than I had before.
Thanks.