I have a 72 challenger which when i received it had a sunroof installed which appears aftermarket. However, after personally seeing another 72 with the same type of sunroof installed, i woundered if maybe this could be factory or just luck. I know that sunroofs were an option on 70 and 71 models that did not appear in the vin. However, I did not know of 72-74 models receiving sunroofs. Any info would be greatly appreciated, thanks.