[ZR1Vette]

Interesting... where exactly is the stamp "driver's side oil pan flange" and is it visible without the engine removed?

When I was down at BG watching my C6 being assembled went over the the engine assembly area (meaning the engines sans accessories and drive train that come from the engine manufacturing facility are mated to accessories) the VINs are all computer/bar coded generated and then a device is placed in the correct location of the engine and 'engraves' the number...no stamping or human involvement (other than placing the 'engraver' on the engine)... at the same time elsewhere in the assembly plant a device is 'engraving' the chassis with the same VIN.