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The H just means it's a 340 car, you could get whatever options you wanted with it. I had a 72 340 Duster, pretty basic car, manual drums all around bench seat, non rally dash, power steering, air conditioning, 3.55 open rear.



Yes, H does mean it's a 340 car, the 5th digit in the VIN only represents the engine the car was originally equipped with, however, disc brakes were not standard equipment on 340 cars after 1970.