Whats the VIN and the build date (trim tag code) on the car? Could be a real early or real late car. Since you know of the V0.... code on the engine pad, I'm guessing there is no VIN in the same area, which would lead to it being a late car.
Like mentioned earlier, the casting # on the back of the block would help also. If theres a VIN near the oil filter area, it will most likely be very tough to read, especially with the engine in the car.
Also, what is the trim tag info?