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help decode my 12 bolt..

1516 Views 11 Replies 4 Participants Last post by  Dan1979
just picked up a 12 bolt open drum to drum for 300.. Real nice no rust at all. I already determined its a 69 rear but can't figure out the other #'s . They are R8 0903K. Any help would be great.. Also how do i figure out gear ratio thats in it? Is there numbers that tell that?... Thanks....Dan
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