1967 12 Bolt Diff c/w original rear factory traction bar bracket. casting date D 5 7 April 5 1967. Code stamped on pass side Diff tube reads QK 3.31 ratio posi, original ring gear dated 3 / 68 currently has non posi open carrier. Never welded on, all original mounts, comes with floor mounted bracket for front traction bar attachment, I do not have the bar but it is reproduced, I included a pic of the setup in a 67 . this diff with traction bar was installed in all 67 SS Camaros built after Dec 15 1966 and all Z28's. $2600.00 US --- call or text jo -- show contact info