What I'd do is list the date codes as someone doing a numbers resto might need one of em
Yes.
But keep in mind they become worthless for restoration if they're a sandblasted rebuild. Rebuilders who took in cores typically blasted them as a step in remanufacturing.
Lots of Mopar owners (like me, duh) gave up their originals to buy rebuilds. My original alternator, distributor, and starter are all long gone.
At big shows like Carlisle there will be sellers with these units because there will be customers seeking certain date codes, unblasted, that is.