The reference is nice to have, but when I search that 3909197 part number it brings me to the same OER branded mirror I have. People are saying the firebird mirror is different from Camaro for 67 but the aftermarket apparently says that’s fake news lol. I would love if someone has a correct one they could take a close up picture of so we can compare to the aftermarket option.
The only other thing I’ll say is the bracket listed for 67 has two normal holes. Mine has one normal hole and one slot so I guess you don’t have to be as accurate when you drill them. Looks the same otherwise though.