Beginning in 1969, Ford introduced both the Boss 302 and Boss 429. Styling for the Boss 302 was done by Larry Shinoda, the suspension by Kar Kraft, and the engine was done by Ford who used the 5.0L block with the new 351 Cleveland heads. Originally, the Boss was to be named the "Trans Am" until Ford discovered that GM had already licensed the name.
The Boss was based off of the SportsRoof body, but the simulated side scoops were deleted from the model. Flat black paint was used on the hood, rear deck and taillight panels, and the headlight buckets. The Boss Mustang was only available in four colors: Wimbledon White, Bright Yellow, Calypso Coral and Acapulco Blue. On the side of the car, a large C stripe with Boss 302 lettering is found. Although a variety of colors were offered for the interior of the Boss 302, standard black was often used. A front chin spoiler was standard, but the rear window slats and plastic rear spoiler were options.