1968 Ford Mustang Fastback 428 Cobra Jet. Engine: 7.0L 428 ci Ram-Air V8 Cobra Jet, 335 HP at 5600 rpm, 440 lb-ft at 3400 rpm. Transmission: 4-Speed Toploader Manual. Performance: 5.4 seconds 0-60 mph, 13.9 seconds 1/4 Mile.