[Motorhead6]

Purist collectors WILL INDEED demand correct date codes and casting numbers on certain rare Fords. Also, there are certain numbers stamped into high performance blocks, for example, that identify them as such. A friend showed me this recently on a Super Cobra Jet block which allowed the potential buyer to identify it as "the one" he had when new. I agree that some GM models can have matching serial numbers such as the same as the VIN on some components, but I think most do not; I'm sure someone will correct me if I'm wrong. I think I'm right that not very many GM models can claim this other than that, like Ford and MoPar, certain components can be identified to correct models but not a specific car or truck.