My charger is numbers matching but the factory misstamped the engine and trans as an F code vice H code. All the other numbers match the car perfectly and the car is an H code 69 383 magnum 4 speed car. Was this something that was common? I know that the QA was lacking back then but just thought I'd check with others on this since it was surprising. The date code on the engine matches the cars build date as well.