Thats a A Body seat, you had more than a bench option, since it's a 2 door you have to have a split bench, they came the way you see and they also came in a high back version where the headrest is not removable.
Some had the arm rest, some didn't, as best as I can remember from 1967...(and I know someone out there remembers better than me so have at it)...thats my 2 cents!!!
