Won't help with H4s, I tried it ages ago when I put LEDs in them. They're low wattage and the reflector is designed for maximum scatter. They're designed to be seen rather than to see with.
It’s likely doable but it won’t help you see any better. All it will do is dazzle other drivers and likely fail the MOT. The DRLs spread the beam to help you be seen rather than see by. DRLs should either go off when the lights are put on or dim from 20w to 5w (equivalent for LED) so as not to dazzle. If you want better lights I’d recommend swapping the headlights to the H7 versions (see the big thread on here).
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