Turns out that I needed wires, plugs, distributor cap, and rotor button. My first clue was when I soaked the engine during degreasing and it ran poorly.

 

Could've probably went with cleaning and regapping the plugs (unless platinum,etc.), but moisture is the #1 enemy of distributor caps. Evaporation goes upward from the ground (and many times slips mopisture easily under the cap. Sometimes you can get away with cleaning them out once before they're shot.