How can you tell if it's the original engine. I'm kind of getting confused I thought there was one specific engine for every car but as of late I'm starting to think original engine just means it was built in the same place the car was or soemthing like that can any one tell me exactly How to tell if it's the original engine and what does original mean. Can any one decode this for me V022IKM it's the engine in my 67 rs camaro thanks