[Porsche84]

I have a 964 engine that was purchased directly from Porsche and never installed in a 964. It has no s/n. I was surprised when I bought it (from original owner) about the lack of s/n, but the story from the original owner seemed totally logical. I asked around at the time and everyone seemed ok with the story, though no one could confirm definately that Porsche sends engines without s/n.