From what i remember..there were 2 different turn signal switches, possibly a third. One being a Boyne switch which my 67 400 has..with a non screw lever and tilt.
Si Vis Pacem Parabellum
1967 Starlight black PMD Engineering 400 Auto 1968 Alpine Blue 400 4 speed 1968 Verdoro Green 400 HO 4 speed 2013 1LE 2SS/RS Inferno Orange Camaro.