Quoted from ForceFlow:Maybe this?
https://www.pinballlife.com/cool-white-pcb-led.html
Personally, I'd keep the lamp sockets in the game in order to give future game owners the option of what bulbs to use.
I purchased some of these to try in my valley strikes and spares. I had a lot of flickering but I assume if you had a new light board they would work fine?
I was hoping that since it had diode’s built-in that I would need a new light board