1963
That was also the year they replaced the Lockheed brakes with Bendix brakes and the transmission push buttons gained a Park lever.
Cars with the Lockheed brakes had the emergency brake on the driveshaft behind the transmission, not the rear axle, while the Bendix brakes had the emergency brake on the rear wheels.
Chrysler, Dodge 880 and Imperial were affected by this change in 1963. Plymouth and Dodge Dart changed in 1962.