The N94 hood would have been available on the 1970 cars after the hood was introduced. I do not know if the FAST guys check date codes?

(They must not check thing's too close since Tom has wheel lip moldings on his T/A. )

The N94 hood would have been available for 1971 also.

I am not aware of any that came factory on any 440-6 cars yet, but 340, 383 & Hemi cars are known.