You could doctor regular rivets to look like the factory rosette rivets to be more accurate if you want.
It would take some skill with a die grinder, and then paint them black...
The ones on mine were shiny since it was on the jam (like post #7). Don't think I'll get that cute with it. It's probably not worth $35 to me. A couple off the shelf will do the job.
I didn't realize '67's had the VIN plates in the jams too. Good to know!
