Thanks for posting your concern argocooper!
GT500 is correct. Our installation instructions are referring to connecting both ends of the same belt to one bolt. In the case of the YJ's, Jeep designed the rear buckles to connect to one bracket on one bolt. You should always use the original hardware when available. The rear seat buckles on that double bracket need a grade 8 or greater bolt.
We are always happy to help if you have installation or other questions.
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