67-72 NOS UPPER BALL JOINTS A BODY

Clearly the O.P. wants Original Equipment Manufacture New Old Stock, not aftermarket New Old Replacement Stock. He probably has a very original car. His car, his choice.
That's not a knock on your parts. I've been hoarding older Moog and TRW for awhile. Ever since quality took a dump when suspension parts began being made overseas. I have enough for three each A and B-Bodies. That's more than I'll ever need, but if I see it for sale cheap, I scoop it up.