I was at a Mustang show this weekend. I was admiring a very nice 1966 San Jose restored convertible and a 1966 Dearborn restored convertible. Both cars seemed to be restored to MCA rules. That is, spray sealer on the dash panel, proper overspray of the body color on the underbody, etc. The San Jose car had the exterior paint (red) covering just about all of the inner rear wheelhouse over the sound deadener. The Dearborn car had the wheelhouse area blacked out so that no exterior paint was visible. I was told that most of the Dearborn cars built in 1965 and 66 CY had the sound deadener applied after exterior paint or a blackout was applied to the rear wheelhouses. Also at the show was an original, or at least purported to be original, unrestored Dearborn car from July 1965. The rear inner wheelhouses were black. I also saw a Metuchen unrestored car with the black inner rear wheelhouses. Based your observations, is what I found consistent with the build practices of the 1965 and 1966 CY?