Although I can't speak for this particular alternator, I'd believe all of the similarly priced early style would be sourced from offshore. They're hit and miss. If you're going for an all OE look, I'd give it a try. Price seems OK.
On my '90 Mustang, I replaced its poorly designed 2nd generation ("G2") alternator with a G6 from a 2000 Taurus. It was a used unit that I had on hand. It only required an internal regulator change, as the G6 has no less than 6 different regulator choices :-/. On that car, it was a bolt up affair, requiring a new charge lead and inline mega fuse to the battery. Benefits included a 90+ amp max output, internal fan, and correction of the potential known fire hazard that all of the G2 systems had (overheating harnesses due to corroded terminals and small charge wire(s).
Do a google search on "G2 alternator conversion" to get an idea. Most use a G3 to convert, but my on-hand G6 was a drop in deal in the Fox car.
When I complete my resto on the '71 it will have one of these compact, modern "one wire" upgrades done to it too. The ones shown use serpentine belt pulleys, so I'll have to research which alt to use to get standard V-belts to work.
There's no need for the big clunky '70's GM one wire conversions, especially when the Chebbie guys might point and giggle at you at cruise nights...