I just purchased a box of NOS BF42 Powertip plugs. I know have an NOS set of each, one set with the Autolite Star logo, the other with the Powertip. Which would be correct for a July 1966 built, Dearborn 289 2V coupe?? Also, does anyone know when the Star logo type plug went away, and the Powertip came into being? Thx
Bill