I would HIGHLY recommend that you not use 100Watt bulbs. The added heat will fry your expensive headlight assemblies. Do the conversion to Euro lights with standard bulbs FIRST. Most of the light strength has to do with reflector effectiveness, NOT bulb power. The Euro lights are a DRAMATIC improvement from the super lousy US spec lights. I expect that you will be satisfied with Euros and standard bulbs. I drive about 20 miles of winding, hilly farm road just to get to the highway with lots of deer and escaped livestock on the roads. The Euros and standard bulbs work fabulous. You'll think that you have a couple of locomotives running next to you.

As far as conversion information you will need the Light units themselves, the rotary dial dash control and escutcheon plate. If you have wipers, I put a detailed post here about three years ago giving precise directions on how to convert your existing wipers for use with the Euro lights. A search should come up with it.

Good luck,