The older style vehicles with sealed beam headlights stand to benefit the most from a crystal clear chrome or black headlight upgrade. With these crystal clear headlight housings you gain the ability to also upgrade the headlight bulbs from the standard halogen ones them come with to a set of HID or LED bulbs. That means that the weak headlights that can with your sealed beam models in your car or truck can now be 3 times brighter than the halogen bulbs. Or if you vehicle is a classic car or truck that had incadescent lamps then your light output can be up to 10 times brighter than factory with a better beam pattern and more light on the road.