Here's Mopar Performance's reference to 'red' color code 1970 440HP valve springs and the 'blue' 383 2bbl units; from their engines book.

Knowing how many members here have or have seen '70 blue N Codes with 'red' springs - a pattern forms and some may take notice to it. Or not...

If Mopar was installing 'red' HP valve springs into all their 1970 E63 equipped B/J/R/W models, then to conclude the matching HP cams were not also installed would...? Any one reading can fill in the blanks and keep to their self.
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Only know who your daddy is because momma told you so.