WTB: B-Body power seat motor

I'm still trying to find one for you but it fits just the '78 and '79 models with buckets or split bench. It was much more common for the switch to go bad than the motor. You can move the tracks manually but it's kinda of pain to do it that way. You pretty much have to remove the motor and spin each pair of cables equally for each direction. Yours doesn't move in any direction? If so, it may be a power problem and not the motor.