My view on Green vs Tapered bearings

The factory tapered bearings in my 70 440-6 RR (Dana 60) went something like 90K and I ran the Pea -aye-ess -ess out of that thing

On the other hand, many old ford 1/2T pickups used sealed ball and they lasted long as well. "Up here" in this country, guys used to (over)load the HECK outta them with firewood