That needs a little poking at to determine what the deal is.

But yeah, back in the day, Chrysler hardly scrapped anything; look at all the under- or over-size block dimension stampings for example.
Seems kinda baffling when manufacturing volume & cost-effectiveness are considered, but that's what they did.
Yet they'd ship cars & overnight race parts to their contract racers.
Nowadays, it seems the thinking is 180 degrees opposite.