who makes them and where to find them..???
I have had very good luck with the GTS headlight covers.
GTS Headlight covers: Thunderbird 83 - 86 GT0205 (I think)
Be VERY careful on ebay. I purchased a set of headlight covers and they were . I tried looking up the seller, but it does not go back that far. The ones on ebay were simply a smoke colored piece of plastic cut the shape of the opening. The seller then put cheap rubber trim around it. Didn't fit right, didn't look right. The GTS have a slight contour and really fit my car nice. If I find the ebay seller I'll edit this post.
Payment To:
Automotive Accessories
Seller's ID: greatpartsguy4u
Seller's Email: jwade@wadeauto.com
Avoid the above at all costs. RIP OFF!!!
They are currently on Back order, but Sumit carries them.
http://store.summitracing.com/egnsearch.asp?SearchType=Make&N=700+4294925044+4294908269+4294908263+115+400397
Cougar and T-Birds are different!
GTS is the only company I know of that still makes them. I got lucky and scored a set of NOS ones from rodsterh here on the forums, havent installed them, but I cant wait to get it out of the garage and put em on.