I fixed my AC leak - one of the Schrader valve cores was leaking. While it was empty, I also replaced the two o-rings on the compressor.
I also installed sway bar poly bushings. Not sure if it is simply because they aren't thirty years old or they really are a lot stiffer, but the front end feels tighter, and the 'shudder' I was getting under heavy braking is gone. I did a before and after test drive on a windy, hilly road near my house.