Rotor Packard ? 8 Cyl. 1935-1936 With Autolite Distributor, 8 Cyl. 1938-1939, 8 Cyl. 1940-1950 With IGT Distributor, 8 Cyl. 1940-1950 With IGP Distributor, 1951-1954 With Autolite Distributor,8 Cyl. 1955-1956 With Autolite Distributor