Ad says: The seats, carpeting and all of the interior are original and in an amazing state of preservation. New parts replaced recently by the last owner included: Fuel Injector harness, Radiator, Water pump, Thermostat, Alternator, Brake master cylinder, Brake booster, Front brake discs and pads, Fuel filter, Head gasket, Spark plugs and leads, Clutch master cylinder, Battery, 4 New Michelin tyres, 4 New chrome rims, New original style seat covers and new seat foam, exhaust, all 4 shocks replaced with KYB shocks, all suspension bushings replaced, new brighter headlights, wood gear knob, gear lever bushings and high quality tinted windows.
Maybe the seat frames are original - I'm sure they are!