13/16 shaft size on P/S boxes and 3/4 on Manual I believe. Somebody correct me if I'm wrong. Also Pretty sure the originals had 4 plys and OTC versions had 7 plys
Scott
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69 Camaro RS/SS X22 4speed NOM but working on something special
69 Camaro x11 355 crossram m22 12 bolt 3.73's
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