So recently a guy posted pics of taking his 69Z apart, and the was the letter "G" in crayon on the inside of the lower fender extension. While looking for an explanation for this one person suggested the G stood for Z/28, as it is a G on the broadcast copy under the engine RPO 11, and the G was to let them know where to punch the fender for emblems.
Now it appears that the lower fender extensions were painted independent of the fenders, so why would they put a G on the lower part?
I appreciate any insight to this, and if his expanation of being a Z/28 is a good one, and if this is discussed anywhere else on the CRG that I could not find, or in a research article. thanks