I wasn't going to do anything with the shift ball....it cleaned up pretty well and was probably fine for a daily driver. But - I had a $40 credit with ClassicParts that I needed to use so I thought I would see what I could do here.
Now, you might suspect that the shift ball for this "odd ball" was probably not available, and you'd be right. However, if you were me, you'd figure that the manual transfer case shift ball was probably identical and would work in this application. So, I ordered one up:
Pretty much exactly the same! After about 30 seconds of work, you can pop the indicator out of the old knob and slip it into the new knob and VIOLA!: new shift ball!
