"same owner since 1982" means "original owner" I would say.
Needs fuel pump = needs fuel system rebuild, which you would expect for the sitting for multiple years. It is entirely possible that the owner put those 5000 miles on the car in year 1 and it hasn't turned a wheel since.
I would think high teens to 20k would be a good price considering most of the rubber on the car needs to be replaced, as well as the fuel system. Sorted and running would be high 20s to 30s.