The glass headlight housings are JS Power part# HL04X4.. They work with H4 bulbs.. The LED H4 bulbs are Aukee 6000k Cool white H4 conversions Part #659516951940.. I know there are issues with some LED headlights flickering or going out prematurely and haven't had these long enough to see how good they really are but so far so good.. The 4x6 headlight housings are decent enough.. They look very close to stock and fit on car perfect.. I know there is another brand Hella that also makes the 4x6 glass housings but they are more expensive.. I will keep you posted on the LED bulbs as I use them more. Also I would love to have a 454 in my ride that would be awesome!