The Mach 1 remained mostly unchanged in 1976, as a new performance model – the Cobra II – was introduced alongside and that was the new top dog in the looks department. It, like the Cobra II package and Stallion packages was simply cosmetic. To get any performance you had to order the V8 engine.
The 1976 Mustang Mach 1 came with the larger engine from the prior year; the Rallye Package which includes Traction-Lok differential, 195/70 BWL tires; an extra cooling package, exhaust with bright tips, and digital clock; and the competition suspension system which consisted of heavy-duty front and rear springs, rear stabilizer bar, and adjustable shocks; color keyed remote adjustable side mirrors, leather wrapped steering wheels, and styled steel wheels with trim rings. The 1976 Mach 1 came only in the hatchback body style.
A detailed list of the standard 1976 Mach 1 offerings include: steel-belted radial tires; tachometer, ampmeter, and temperature gauges; contoured bucket seats, color-keyed cut pile carpeting, fold down rear seat, styled steel wheels with trim rings, and dual remote control mirrors.