69 Charger headrest Question

[69DodgeCharger]

Here's the deal. I have a set of nice 68 Charger seats for my car I jut have to switch the covers to the 69 style. The thing is they don't have headrests. I was told that the frames are the same for headrest or non-headrest cars. Here's the question. I have a set of headrests from a 70 Duster with a bench seat. Will these work for the seats I already have? And if so are they correct I'm guessing no, but.....

[Belgium R/T -68]

According to my opinion there is a difference between bucket and bench headrests.

Per

[Brock Lee]

Yeah, the bench style have two different length rods that go into the seat. The Bucket rods are equal.