I had a 60 GMC as a younger person. 4 headlights, I left the low beams alone and installed 100 watt aircraft landing lights in the high beam position. Years later the Peugeot 505 got the high beam headlights removed and replaced with hi/lo h4 housings. A little wiring and voila, much better lighting. 4 headlights on all high or all low.Those small sealed beams were inadequate