Here is my understanding of the underbody paint at the three plants for the time period of the 1964.5-1966 MY Mustang production. I would like to know if it's correct. At San Jose, the semi-gloss to glossy red oxide was used for the entire production time. At Metuchen, it started off as red oxide but switched to a dark gray glossy batch color. At Dearborn, it started out with a fairly glossy black but switched over to a batch gray. Does anyone know the approximate timeframe for the switchovers, if there were any? Or did the plants shift back and forth among the three alternative paints for the underbody at a random sequence? Did Ford ever reach a consensus as to what to paint the underbody? For instance, after xx/xx/xxxx date all cars at all plants were painted only one color? Thanks