Unlike offroad LED light bars, there are strict laws and regulations on the design and brightness of car headlights (are LED headlights are legal in your state) so you cannot install just any LED headlight on your car. Each state has its own standards and your car needs to abide by those regulations.
A common requirement for headlights is that they offer road visibility between 50 to 100 meters and that the brightness does not cause astigmatism in incoming traffic. Another basic requirement is that the light color is either white or yellow.