Quote: Because the holes were not flared in the 1st generation of the OEM Filter made for Chrysler, the holes were punched with flat edges. Only after the perforating tooling became dull and a burr started to appear on the punch down side was the change to the tooling made, and the flared hole iteration began.
Not trying to be a negative nelly. But I would like to see some info to back this claim up.
I've been around these cars since the mid 70's . And although back then nobody cared about these kinds of details ( myself included) I honestly can't remember ever seeing an oval filter element that was flat screen .
The 1972 on the labels above is 'probably' not the date the filter was produced. It was nothing more than the date the label style+color was copyrighted.
