if you're wondering what to do with your muscle car era original headlights, cause they are so damn dim compared to regular new car headlights, I just learned that the 7" Toyota Koito H4 Headlight is a direct replacement, and highly recommended much brighter upgrade

 https://www.facebook.com/photo?fbid=27399294496342109&set=gm.27573636828895839&idorvanity=107673642585528

https://cruiserteq.com/oem-toyota-koito-h4-headlight-upgrade-kit-w-harness-elec81110kit/

https://www.tacomaworld.com/threads/the-ultimate-headlight-upgrade-h4-not-led-or-hid.398066/page-221