Yes don't forget the 1970 model year also should fit. Not to mention that fact that Cadillac, Buick, and Pontiac should be included in the mix.
I ripped out and recycled the full interior out of an Electra 225 for my Impala which was a considerable upgrade over what I had before. Split power bench seats and power windows and a tilt steering wheel all swapped over and bolted up. I didn't install the powered radio antenna or lighted ash trays as I think that was a bit over board. I did install the map reading dome light combination as I do read maps and other written material at night.