These are by Marz, some German company Boxenstopp works with. They are the first rearsets in his online catalog.
Except they came with a bunch of parts that I can't figure out. I don't know if somebody got confused and threw extra stuff in the box, or if it's some kind of bonus parts because I had to wait three months to get the dang things. (Not Joe's fault, he jumped through hoops to take care of this customer.) So when I get hold to a camera I need to take pics, and maybe Joe or one of you can tell me what these extra billet aluminum parts are.