I used Hella bi-halogens in my headllight conversion. I simply removed the pop-ups and all the attendant hardware, mounted the Hellas to the bulkhead inside the hole in the fender, and made some curved buckets out of aluminum flashing, which I painted black. I'm going to try my hand and making a set of curved lexan covers - I've seen people put flat lexan covers over their conversions, but that ends up looking
really home-made. Here are a couple of pictures of what I have so far (see post #5):
http://www.968forums...968-headlights/
When I have my lexan covers done, I'll apply some calk along the seam between the curved bucket and the back piece, and touch up the black paint. I have my old headlights and assemblies in a box, ready to ship to any prospective buyer. I weighed the box, and was amazed to find that it weighs a whopping 32 pounds! The new lights and buckets can't weigh more than a pound or two, so this conversion has created a significant weight savings (about 1 percent of the weight of the car!)
I can't stress enough, though, that I WOULD NOT recommend this for a street car. First, even with my eventual curved covers, these lights aren't pretty. They really change the character of the car. Second, this conversion was A TON of work - took me a solid month of nights and weekends, and I haven't even made the covers yet. Getting the buckets in just the right shape, and then coming up with brackets shaped properly to hold the buckets in place, with no pattern to work of off, was almost enough to put me in a padded room. But for for a home-made conversion on what's going to be a mostly-track car, I'm happy with the result.