With our hardtop now residing in our own garage instead of the Mustang Monthly tech shop ... internals and install and adjust our door and quarter-glass fit and their mechanisms.

In particular, sidescoops and quarter-windows were ... design changes for the '67 Shelby Mustang. It's also interesting to note that, during the summer of 1966, 5S319 served as a loaner vehicle ...

That's because what you see in the picture above is not an original '66 Mustang GT350 ... the standard ’65 fastback body include rear quarter windows (new for ‘66), rear valence panel with ...

The 1966 GT350s had functional side brake scoops which ducted air to rear brakes. Rear quarter windows were plexiglass and replaced stock Mustang louvers. Hood was fiberglass; scoop was functional.