These are what the LEDs from ClassicCarLEDs look like by the way
I tried some of those less in my mini about 3 years ago, Philip's ZES chips positioned to replicate the position of the H4 filaments- they were very good and gave a very clean beam image cutoff. Mine were typical LED cool white, don't think warm white was an option back then.
I refitted my equally illegal 100/140 watt halogens as I didn't like the cool white colour in a classic car and while the leds were very good they just couldn't match the massive light output of the 100/140 watt halogens.