That's really good news! What brand, where got and part number, cost, please. How did you determine LED location? Was that AFTER you bought these H4 lamps?
The specific LED in question I purchased on eBay, from neverland-usa (bought a ton of other LEDs from the same seller for cars, etc.)
You have to be careful because not all of them are street-legal with cutoffs. I'll post a few pictures that I took from this bike, but the same LED is installed in my other bikes so the effect is similar. I did recently replace them with an updated, brighter model from the recently re-branded company.
I was aware of cutoff issues before I purchased, so I had to choose one that was advertised as no glare, though with Chinese stuff it's often a matter of trust in the manufacturer's word.
Here are the pictures that I posted on another forum:
(limit 4 attachments so I will split across two posts)
This one just shows the H4 bulb, with passive heatsink. I think you can see the model number on the box.