any substantial wear and tear can and will not be repaired by regreasing, proper greasing before the metal starts to wear away could prevent a badly damaged bearing, but no ammount of grease is going to replace worn metal

Well theres also the chance that...maybe its something different?

well, yes of course

The bearing was in good shape other than needing grease. I have to hit it just right to get the noise. I have to be making a left turn and going over some uneven pavement at the same time.

Everything seems tight. I'm at a loss as to what it could be. These suspensions on our cars are beautifully simple; so then it doesn't leave a whole lot of possibilities. The only thing I can imagine it being is either the hub of the intermediate shaft. I just don't know for sure though.

I haven't heard a strut, strut bearing, hub, or the intermediate shaft make a sound as you described. All of those would be more of a clunk than a higher pitched clank. About the only thing I can think of in the suspension that would make that kind of noise are the end links, which I assume you've already checked. Perhaps it'* not in the suspension, maybe something more like a loose heat shield over the exhaust or something?

Any way to get it to happen in a parking lot at slow speeds?

I'm thinking if you could have someone duplicate it with the hood up and possibly get a better idea by standing outside the car.

Some of these issues are maddening as you chase them over a long time.

Hang in.. you'll get it.

Would a strut mount/bearing from Autozone be as good as from Napa? They have a Gabriel mount at Autozone for $56.99 and the one at Napa is $91.29 :?

Not really. You'll find that much of a markup with NAPA versus AutoZone on alot of things. That'* why I usually go AutoZone.