The vin denotes a 340 swinger for sure. The code V88 on the fender tag says or means strip delete. If you chose stripe delete you got fender badges (Dart) in Lou of the stripe. On a GTS it would have GTS emblems on the front fender in Lou of a stripe. As far as the statement "original condition " , I believe he means as you already pointed out, original from back in the day as what a lot of motor heads were doing to their vehicles not that it is a factory production vehicle. Just my thoughts.