Mike, the use of a pick code on the original cable is no surprise but the p/ns you list are a big surprise.
Looks like the SR cable p/ns listed in the '73 MPC might never have been the same as the OE cable p/ns. Wonder why?
And I'm thinking the ones in my TA now are either replacements or maybe are original to the Olds 403 transplant that was installed by a PO.
When I get a chance I'll pull them out and see if I can identify them.
Looks like Lectric Limited has repros with the OE p/n stamped on them but I think lack the pick code from what I can tell in their pic of the negative cable.
Also, the negative cable seems to have an extra lug rather than a Fusible Link wire at the terminal end.
https://www.lectriclimited.com/batte...y-cable-141797
https://www.lectriclimited.com/batte...y-cable-141151
I'm gonna have to drag out the Shop Manual to see what I can make of the extra lug. And I think I'll see if I can come up with a good set of originals that somebody would let go of for cheap.