Trying to see if I can determine some general or specific change over periods for each of the different firewall pads used at San Jose in 65.
We realize that the typical/normal pad was produced and supplied by a different sub contractor than the other plants (like many parts) characterized by a "dimpled" or "off set pegboard" surface
Major difference appears to be the punch outs for the AC hoses. So far I've got the
1- No punch out
2- Vertical oval ended punch out
3- Vertical square corner punch out
4- Horizontal (angled up at passenger end) oval ended punch out
Here are a few examples
No punchSome may notice the early clutch rod seal in the example below
Vertical oval ended punch out Vertical square corner punch outHorizontal (angled up at passenger end) oval ended punch out