MALIBU Seatbelt bolts, which positions?

[DrgnWgn]

Hey all, this my first post. I am putting a 1979 malibu wagon back together after a full frame off restoration, and while I have most parts bagged and labeled, I grouped these seatbelt mount bolts in one bag and don't have disassembly pictures to help me know which size goes in which position. I have labeled the pairs with letters. The only difference between most is the length, but two (C) have more square heads. The A and B "collared are also slightly different lengths.

Thanks in advance, and be prepared for more "where does this go?" Posts. I may try to start a retrospective build thread as well.

 

[ELCAM]

Best I can do is the long shoulder ones go where the belts share a bolt. The shortest ones hold the front shoulder rollers in.