I know I'm late to the party, but here is what I did about two weeks ago:
I bought CAPA certified headlight housings, a HID projector retrofit kit, and all the misc wiring bits to get the job done for about $170 off Amazon.
It was pretty easy to install, the lowbeam light output is significantly more than my hazy stock housings with sylvania bulbs, the highbeam output is more also, but the difference isn't as ridiculous as the lowbeams were. Despite the increase in light output, the glare is less with the HID projector lowbeams when approaching my truck with my GF's car, however the visible range with the lowbeams is similar to the sylvania halogen setup I had been running, due to having the headlights aimed fairly low.
HID retrofits are legal in my state as long as the bulb color is within 1000k of stock color, depending on your state, an HID retrofit may not be legal.
Check out my build thread for some related pics.