On my rear seat of my 67, the top part. There are two metal tabs on the frame on the bottom, these tabs look like they mount by bolts onto the body. Do they?? There I believe two bolt holes in my fllor that looks like they go there. Does anybody know what size bolts go in there?/ Since I've own the car (1983) I just hang it from the top hooks, but, now that I put two car seats back there, when I tighten the belts, it pulls the back of the seat up.

I believe they are just self tapping screws with a big washer.They are very elusive in the camaro world. Know one ever puts em back.