Couple of questions.

What K member are you using? The original 68 or maybe someone swapped it?

Can you get some good pictures of both the pitman and idler arm, just to make sure you have the right ones.

Maybe someone can comment on the proper centerlink needed for the K member you are using, I dunno the details enough to say if what you hae is the right one. Been a long time since I messed with later A bodies. I have a 65 in my garage.