Not from what I've seen in the factory parts book.Are the wiper blades on 1968 dodge dart sedans longer than on hardtops?
I think that's what I measured with an end clip type replacement. Also the replacements are a little long so the other end sticks out a little beyond the claw.The metal was a tad wider then the last insert. But it fit much better.
I posted a sketch with dimensions from an old stock Anco 12 series in the other thread.The last refill didn't have any side cuts to retain it. But the rubber was just the right length that the ends where the blade rolls over kept it in place.
One had a keeper, the other did not.