Try Nathan Shue @ www.HID-source.com he has retro kits for most everything, and has been on LSITECH.com for quite some time. I've installed 3 of his kits (my 06 Solstice, 93 4 runner and my 68 Firebird).
Got one side completely stripped, painted, and assembled today. They look great! I have the other side stripped, painted and 99% assembled, but the guy I ordered the headlight adjusters from only sent 4, I needed 8.
Big ups to 69Bird for recommending the e-bay kit. Even with my time, POR 15, new headlight adjusters ($14.50), springs ($7.00), the headlights ($70.00)and the headlight door mounting kit (18.00) I wasn't anywhere near $240 and everything from the headlight base plate to the lights themselves are brand new!
There were three modifications that I had to make to get them to work:
I had to modify the trim rings by laying them on a flat surface and rolling in the lips to go over the headlight glass.
I also had to trim the bottoms of the headlight mounting cups because the new headlight bodies are much longer than the factory bodies. They actually stick out through the bottoms of the mounting cups. By a good 2"!
I also had to enlarge a couple of the slots that are in the mounting cups for the base of the headlight lens to fit in. The lugs in the headlights do not match up with the slots in the cups. A dremel tool with a small cutting wheel and a small grinding stone made quick work of that.
But it was still worth it in my opinion as the price was nice and none of what I had to do took longer than 30 minutes. Everything that I used other than the POR 15 was purchased on E-bay, with a fairly significant savings over "retail"....
Only thing I found on e-bay is a set of 7" 71+ Chevelle headlight housings and bulbs. No wiring or relays. The $25 price tells me its not great quality, even though the housings are supposedly glass.....
If the quality and price is reasonable, I'd rather get everything at once.