1970 FORD MUSTANG, MACH 1 & GT FACTORY OWNERS OPERATING & INSTRUCTION MANUAL - USERS GUIDE. ALL MODELS. GT, Mach 1 Grande, BOSS 302, 351, 390, hardtop, fastback and convertible This listing is for one 1970 Mustang owners manual measuring 4 x 9, which contains valuable information about warranty, maintenance, operator controls, accessories and operating instructions for the car. It also explains what all of those funny knobs and gizmos are for on your car.