I'm embarrassed for myself ever since Mr C joined.
The similarities are too close, Mr C.
My thoughts are that the designers purposely tried to recapture the lines of the 67/68 Chryslers.
I'm not going to speculate whether it was out of laziness or inspiration.
Seeing as all the overall Formal lines were "me too" copies of GM (Caprice?) and Ford (LTD?), methinks the more ambitious designers tried to incorporate past design features into their white bread bland styling to keep them from being total GM and Ford clones. Sort of a Hail Mary pass by the designers.