Cabriolet Hard Top catch question

Hello,

I have a “new” rear hard top for my XJ-SC. I have never had one before. This came to me via a friend of a friend, who found it in an Oregon junkyard. My question is: the clamp in the attached photo is on the hardtop (one on each side). There appears to be a corresponding mate to it, that would attach to the “C” pillar along the rear edge of the quarter window. There is a screw hole for it, just below the softtop mounting bracket that will be removed. But, I don’t have this “mate” on either side. Does anyone have any of the clamps I am missing?

I have the two little upholstered covers that cover the hardtop clamps.

Doug