This thread is focused on when the change over took place between the earlier steel style of the drivers side fresh air vent to the later plastic style at NJ in 1967. If you have an original car and vent please submit the car and finding (as to which style) along with the projected or real build date and identify which date your providing.
Will use this first post to collect and share what is uncovered as well as a picture of the two versions to help you identify what you find.
A modified picture of the picture member Paperback Writer posted in the thread listed below showing both styles . Thanks
An earlier thread that really wasn't plant specific though all respondents were from San Jose. For reference it it linked below
https://www.concoursmustang.com/forum/index.php?topic=11024.new#new