Note the engine dates on this car (number 112) a regular production vehicle, is 07/07/66, yet from the old pilot car thread the 001 pilot car first assembled in May 0f 66 has an engine dated 8/3/66. How is this possible, did 001 roll around for 3 months without an engine while it performed its pilot duties, or did it get a replacement engine installed (by GM) when it was reconditioned and made available for sale to its first owner?