To clarify: zimm has replaced his original headlight assemblies with '06 headlights, which are stock with a projector lens in them, hence they fit his earlier 4R. Stock, these were halogen projectors, but he has installed a Xenon Depot HID bulb kit in them. This kit has an HID bulb whose base is modified to seat in the halogen fitting. Purists would argue this is not a true HID projector, as they are not designed to go together, but his pic speaks for itself, (Very cool pic zimm) and this is a viable option.
You 4G owners have this as an option, I did not, and opted for a retrofit, which did indeed cost $1K for the best work and componentry available. Like alex, who has substantially modded his ride for off-road performance, (nice truck alex) I wanted the ultimate in lighting, can afford it, and went that route.
I too went the Xenon Depot route first. Indeed, a 4300K Philips bulb in stock reflectors is whiter and brighter than stock halogen, and at first quite impressive. I never got flashed once either (the yardstick of those who insist "it's OK") but all you gotta do is keep walking away and looking back and you soon realize this setup is wrong.
I no longer try to convince guys like alex and rockwall, that's useless. I jumped in here because at least 2 members have expressed interest in doing the job right, and willing to spend a few bucks to do so. Please read the links I posted, and inform yourselves, I too posted some great pics. So has Harper7 in the 5G threads.
@zimm. Go back and do some editing, eh? Bit uncalled for, man.