Assume because this is a post in the 64-67 section, Bolt-in, as the answer would be all 64-72 Pontiac A-Bodies have bolt in rear axle/bearing retention.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
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