4-Door with 340 from the factory?

I'm not a guru by any stretch, but one thing could be possible; did the car come through Mr. Norm's Grand Spaulding Dodge? They did some things to make some models "special". You could buy a car, sign a waiver, and they would do what ever you wanted done. In 71, you could buy a 340 Demon, sign the waiver, and they would put a six pack on it. In 72, you could buy the 72 Demon, sign the waiver, and they would put a supercharger on it. Always wanted one of those. One disclaimer; with the 72 340 Demon, if you wanted the supercharger, it had to have an automatic transmission.