73 seat bracket hardware

Hey gang...heres my question. I have the original brackets (at least im pretty sure) for my 73 5. The passenger side has two U shaped pieces on top of the bar for what I believe to be a folding seat. I have searched high and low, but cannot find hardware for attachment, let alone, any pics of what it is originally supposed to look like. Is there anyone out there with picture of the original equipment under the passenger side for a 72-75 that they can post? I understand that most fabricate their own, but I would like to follow the original route as close as possible. Thanks!

Chris

 

here is a shot of the pass seat. The two nubs fit in the u shaped notches. http://i1012.photobucket.com/albums/af245/armydan01/74 CJ 5/IMG_3756.jpg
Dan