1966 Shelby Mustangs were quite similar to the 1965 models, though some
minor changes were made. Most visible change was the replacement of the
rear air-extractor grilles by triangular plexiglass windows. Also the
fake body-side scoops of the standard Mustang were opened up by Shelby
for cooling the rear brakes.
remarkable version of the 1966 GT-350 was the model made for Herz
Rent-A-Car. Herz thought it could open up a new market by offering
exclusive sporty cars for rent and ordered 1,000 GT-350s with special
specifications. This model was designated the GT-350H and had a very
distinctive black and gold color scheme.
stylish black Herz GT-350 may not have been commercially successful, it
did however add to the exciting image of the Shelby Mustang and focused
attention on the car. Ford decided that it wanted to make a profit on
the Shelby Mustangs and not merely use it as image makers.
much changed in the interior. Shelby offered a kit for the 1966 model
which restored the rear bench and returned the spare to the trunk; this
also meant a step away from the competition car concept. Since the 1966
Mustang included an oil pressure gauge in the dashboard the typical
gauge-pod of the 1965 Shelby Mustang disappeared. Instead a separate
tachometer was mounted on the steering column.
There are more pictures and info about the 1966 Shelby Mustang on this additional page: "Ford Shelby Mustang 1966: the poster car".