Here's their website..
http://www.convertible-conversions.com/But, actually, all they make are the latch/reciever set and sunvisor rods. These pieces are awesome (I got some), though not quite correct (finish), but they add that better-than-factory-fresh look to your vert!
I think they actually did convert one or two cars, but I guess the problem is that you basically need a convert donor car for all the sheetmetal bits and windshield frame, not to mention the folding top frame!