It's an expensive conversion.
Why not fit some mega bright bulbs?
Many years ago a chum of mine had a Maserati Bora, which had dismal lights. They used a 50 watt Philips stick bulb. I discovered that these were exactly the same as army cinema 16mm projector bulbs that were 250 watts! I just had to pull a little pin out of the 250 watt bulbs and the fitted.
So they blew all the fuses. Fitted relays, and had a Maserati Bora that could burn your eyes out at a mile. 500 watts of headlights.
CharlesY