'92-96 Bronco Rear Seat & Belts
IF THE IMAGE IS TOO SMALL, click it.

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'78-91 have the reels mounted where the buckles (21 in the top panel) are in this diagram, and the buckles mounted near the seatback hinges (8 in the top panel).
#18 (Top Panel, View A) Check Spring Retainer D8TZ9867440A
In the bottom panel View A, the unnamed item between 8 & 10 is a foam washer as shown here.

Repro hinges are available in '24:
https://shop.broncograveyard.com/78-96-Rear-Seat-Mounting-Kit/productinfo/275118/ALL SAFETY BELT ASSEMBLIES INCLUDING RETRACTORS AND ATTACHING HARDWARE SHOULD BE INSPECTED AFTER ANY COLLISION. FORD RECOMMENDS THAT ALL SAFETY BELT ASSEMBLIES IN USE DURING A COLLISION BE REPLACED UNLESS THE COLLISION WAS MINOR AND A QUALIFIED TECHNICIAN FINDS THAT THE BELTS SHOW NO DAMAGE AND CONTINUE TO OPERATE PROPERLY. SAFETY BELT ASSEMBLIES NOT IN USE DURING A COLLISION SHOULD ALSO BE INSPECTED AND REPLACED IF EITHER DAMAGE OR IMPROPER OPERATION IS NOTED.