I had to chop some of the head light off on the back side to get it to fit. Mounts right up kind of a pain though. You have to mount it and hold the bolts inside the housing while you thread the bolt through the bracket then into the housing. It works alright. I dont know what a stock headlight is like,,,but I dont think this one is as good.
Also tried removing the bolt from the head and loosening then retorqing the bolts that go through the head. I didn't notice any difference in vibration.