I cannot recommend the 100Watt setup.
First they just are too bright. .
Second, the higher the wattage the less longevity on the bulb.
For sure you will get flashed on dim to dim them, also, a ticket is likely, do your own risk analysis on that.
A 55 Watt set up will out-light halogens with no problem. Sure they both bolt (or screw) right in, but the metal backing plates on the Caddy were not designed for the rear bulb removal and hook it back up. So when those bright bulbs blow, you must pull the front retainer ring, disconnect the headlamp, pull it out, then put the bulb in from the rear... It will likely be at night in the auto parts parking lot with a phillips head screwdriver, a flash light and curse on your lip.
Can you see why 55 watt, which seem to last forever is a real good deal. Changing bulbs every six month or year, forget it.
Wayne