I got some super six parts and they came with questions!

That is not super six kickdown linkage. It does appear though that it was installed and working. You might try it and see if it will adjust out. The super six linkage is VERY noticably different in that the piece with the long slot is curved rather than straight and the bracket that holds it all to the manifold is also somewhat different. I would try it and see if it will work. Even if it does not, there's enough there to MAKE something work.