Which tie rods?? 1968 Dart

I don't believe it matters as long as the ends and sleeves match each other.

If you are "leaning" one way or other, I would get the later ones

The "big thing' to watch is that your steering box, pitman, idler, and center link must go together. I've got from early to late center link, because of a box/ pitman swap, and kept the same tie rod ends