Most rear lights/lamps are dual filament bulbs - brake-light and tail-light, including 1950.
What type/model turn signal do you plan to use? If original year lamps, just get a second lamp for the passenger side.
Left/driver lamp with license plate lens. Right/passenger lamp with no license lens. Tail Lamp hanging brackets - for both sides, and in different materials.
Stainless/chrome units are available, as are units with plastic lenses.
Chevs of the 40s and others sell 12v LED units, and Superbright LEDs sells 6v and 121v LED bulbs, if you are interested.
