Not really sure I'd want to invest in a salt belt car unless it has been treated to a pampered life.
an untreated car = rust? = stay away from it
where do we begin?
Gen 1 car
Rocker boxes, bottom of the doors, rear quarters (especially drivers side in & around the fuel filler), rear suspension up behind the fuel tank, rear brake lines, fuel evap piping at rear of vehicle, engine cradle suspension bushings, rear trailing arm chassis boxes, rear bumper rebar, heater core return piping (passenger side in behind wheel), radiator support (bottom of rad), bottom of the front fenders behind wheels, front strut spring seats rot, exhaust rot.......
anything else?