There's info but scattered. Bill Rolick started a thread to compile but don't know if he followed up since his original post.
The challenge is it seems that the stamped number has no relation to the part number.
It does relate to the number on the broad cast sheet.
See here: https://board.moparts.org/ubbthread...identification-for-what-application.html

Some springs also have date and other codes.


Is the stamped number a production part number, and that's why it doesn't show in the parts books?
Or is the stamped number jdifferent because it had a different purpose and is not the part number used for ordering?