Trunk lip vin number

The numbers that are found on the radiator support (driverside) and the trunk lip(driverside) are actually the shipping number per my buildsheet. As I disassembled my 68 Formula 383 "S" i freeeeked out for the same reason. I pulled the buildsheet out from under the back seat and looked at it for 30 minutes until I noticed that these numbers were labeled as shipping number at the top left of the buildsheet. Just thought I would let ya'll know.