Thanks to the friendly neighborhood mechanic, the rear brakes are done.
Still no parking brake, it appears the cable is frozen and seized from lack of ever really being used. The car spent it'* first 22 years parked in a carport, so grandma never set the parking brake on level ground.
Well, that'* about it for the time being. Suspension work is out of the budget for the currently unemployed. But the Olds starts, goes, and stops better than it has in years.
Gonna do a drain and fill of the ATF soon. Old fluid is still red, but I have no clue how old it is. Not looking forward to that mess, I've gotten spoiled by the AT drain plug on my Subaru.