Update: I didn't really have much luck turning up a small shop or someone who could replace the seals, so I bit the bullet and took it to NC Transmission in downtown F-V. I was there when they started in on it and since the pump seal came off in three pieces I went whole hog and had it rebuilt. Good thing, as the band was nearly worn through. $1400 later at least I don't have to hunt around for Type F transmission fluid anymore.

The shop was clean and they seemed to do good work...came in just a hair below their estimate. Time will tell, though.