Replace the recpt that has no ground connected to the third prong, with a recept listed for replacement only, and on a system that doesn't have a ground available? Same as what was there in the old days, when it was installed?

Sure it is! It's not as if you have some phoney ground. You could put a GFI in too, marked "No equipment ground". See 406.3(d)3


Mark Heller
"Well - I oughta....." -Jackie Gleason