So the short answer is no, the 413 was a mass produced throwaway engine installed into mass produced throwaway cars that were sold in huge volumes and generally sent to the junkyard when their lifespan was over.
Anything mass produced doesn't qualify as "special".
And the 440 was not mass produced? I think you will find quantity of 440's produced far out number 413's over each's life span.Just about any platform built from 66 on could have a 440.So each 440 is special,I really doubt it.Just like the 413,some are special,some aren't.The 440 smog motor that was in my 75 Imperial was special or was it not? The 6pk motor in my bird is special or is it not?
