I have a 53 Belair and the vin Number is the engine Number. The plate on the door jamb with the serial number they did not use. now I am trying to get the DMV to use that number on the door plate. so i can put another engine in without having to go through more crap. The CHP is telling me that the engine number could be stamped somewhere else. I asked them if they found it somewhere else if they would tell me where it is. they said no, that is confidential.in another words they are no help. so, does anybody know if and or where that number may be besides the engine block? you know the DMV and the CHP. nothing is easy with them. thanks.