The place that will be replacing them suggested new adjusters for the torsion bars. They are concerned about the age and getting them off undamaged. Is this really an issue? They don't look badly rusted. I did find a source for them.
If the adjusters are in good condition you shouldn't have any problems. The threads can be damaged like any other bolt, and they tend to get exposed to a lot of crud. I usually spray some WD-40 or Kroil on them before I loosen them up, haven't had any issues yet. Biggest thing is not to adjust them while the car is sitting on its wheels, they can strip out if they're adjusted while under load.
