Starting in 1969, US-bound models were "federalized" to comply with safety and emissions regulations. A reduced compression ratio of 8.5:1 resulted in a slight decrease in power (68 bhp) and 73 ft-lbs of torque. However, the 0–60 time of 14 seconds was still faster than the Mark II. The instrument panel was moved in front of the driver, and new seats were introduced with integrated headrests to help against whiplash. Cosmetically, the wood dash was replaced with a matte black finished assembly intended to imitate an aircraft cockpit.