this is what I did to my '39:

Truck-Lite 27270C 7" round Sealed LED headlights

https://www.amazon.com/Truck-Lite-27.../dp/B007K8AA7I


removed the H4 reflector housings from the bucket and set these inside, then added an LED turn signal designed for a Harley at the base of the lamp. The LEDs are a nice white light with a good spread in front of the car and not blinding to oncoming traffic and the turn signals are nice and bright to alert oncoming traffic of my intent to turn, and then light up the whole glass housing even with the headlights on, so the whole headlight appears to alternate between yellow and white, with a hard focus point at the lamp itself.





the Truck-lite 7" round sealed led will work in a bucket like mine or directly as a sealed beam unit, my buddy put the same ones in place of his stock 7" round on his 1969 Mustang, they are H4 connectors so plug and play.