Question - re 65 Dart -- One of 271

My Cousin has a 65 Dart, 270, 273 Hi Po, 4 speed. It is , supposedly 1 of 271 that were made, that way. -- It has dual exhaust all the way back, and does not have a cut out, under the bumper for the single pipe, that I remember the 273, of that year having. -- Question is -- is this 1 of 271 or a fake one ?

1 - 65 Dart - 1 of 271.jpg