The basic Mustang models continued to come in three body styles, with the 200-cubic-inch/115 horsepower six as standard engine, a 302-cubic inch/200 horsepower engine as the base V-8. Two new models were introduced in 1969: The Grande was the most elegant of the longer, wider, roomier new mustangs. It was known as the “Most refined sport known to man”. The Mach I came with GT suspension, wide oval belted tires, rear deck spoiler, 5 hot V-8’s, up to optional 428 Cobra-Jet ram-air with through-the-hood “shaker”.

Introduced late in 1969, the Boss 302 received high acclaim from the performance crowd. Rightly so, this little fastback could blow-the-doors off almost anything around town in 1969 and 1970, including many of the big-block muscle cars. Beside its obvious high performance and engineering, the Boss 302 had the name and the real “macho” image, plus the extension of power and speed dominance. The main asset of the 302 was the high performance engine beneath the hood.

Ford named the whole car after the engine, without it the car loses its value. The boss 302 had special cylinder heads that gave it a performance advantage over previous small-block V-8’s. Styling-wise, the whole car was a showcase for high performance features.

The biggest change for the 1970 model was the return to single headlamps. They were located inside a larger, new grille opening. Simulated air intakes were seen where the outboard headlights were on the 1969 models. The rear end was also slightly restyled. A total of 190,727 Mustangs were built in 1970; this included 13581 Grande coupes, 7,673 convertibles, 40,970 Mach 1’s and 6,319 Boss 302’s.

The 1970 Mustang Grande offered a three-quarter landau-style vinyl roof and luxury hounds tooth upholstery. The Mustang Mach I had a low-gloss grille with fog lamps, a striped hood and dual body-colored racing mirrors.

The Boss 302 returned in 1970 with minor improvements. They included revised front and rear styling, new brilliant colors and a “hockey stick” stripe with the words Boss 302 above and on the “blade” of the hockey stick. The 1970 Mach I had the taillights recessed in a flat panel with honeycomb trim between them, ribbed aluminum rocker panel moldings (with big Mach I call-outs) and a cleaner upper rear quarter treatment.

Boss 429s were built in 1969 and 1970. All of these had a gloss black hood scoop and smaller hubcaps. Like other performance models, the Boss 429 got the new Hurst shifter and brilliant paint colors.