This video from 1A Auto was (as usual) super helpful with replacing the power steering pump - except it didn't show the hardest part which is the subject of this post: installing it in the bracket which requires hammering back the nuts, and tightening the upper bolt from the top, back/firewall side of the engine.
One last thing. As in the video, my power steering sensor broke off somehow, somewhere, sometime. They therefore didn't show how to remove the wire from the sensor. But the plastic tube on the sensor that broke off was still attached to the wire on my car. I really wasn't sure b/c I'd never seen it properly. Again, my friend, in trying to pry it off, realized there was a little tab that released the wire from the plastic tube (which normally would be how to remove the wire from the sensor). I was afraid trying too hard to pry it off would break the wire and never realized there was a release tab.
You can see the sensor wire - with the broken off sensor switch tube still on it - at the top of the 2nd photo I posted which showed the square nuts hammered in.