Since the 75 MPC would have only shown what was available at time of its printing was available for a replacement for the original driveline I thought I would double check a 68 MPC to see what, if any, light it could shine on the subject. I found that that MPC did not reflect what was used originally on the assembly line but instead lists replacements only and some, what I found, some details that don't make sense at this time
Can confirm that at least the buildsheet show, for GT J codes (non-GT's had at least two different drivelines) both automatic and manuals shared the same driveline. A somewhat unusual occurrence