The 1968 Mustang GT was a special options package that could be added to any Mustang with the 302 cubic inch or 390 cubic inch V8 engines. The elements of the 1965-67 Mustang GT equipment group carried over into 1968. The 302-cubic-inch V8 version was known at the GT package and the much more powerful 390 cubic inch V8 was known as the GT390.
Other elements of the package included the addition of grille mounted fog lights, dual exhaust, a new stripe, heavy duty suspension, new wheels, a new GT gas cap, and newly styled GT quarter panel emblems. The GT Reflective Group option was available which changed the side stripes to a reflective material and added reflective paint to the steel styled wheels. The stripe moved up into the body and got a new “C” shape to match the body sculpting, and all the GTs rode on 14 inch GT steel styled wheels (6-inch-wide) and wide oval tires. Ford offered the package for the hardtop coupe, the convertible, and the fastback.
In Car and Driver testing, an automatic-equipped GT-390 posted a 0-60 mph time of 6.3 seconds and a quarter-mile time of 14.8 seconds. Of course, the 1968 Ford Mustang GT Fastback became famous thanks to the 1968 film Bullitt, starring Steve McQueen. In the film, McQueen drove a modified 1968 Mustang GT 2+2 Fastback chasing a Dodge Charger through the streets of San Francisco.