LCAs

That's an easy question to answer.
ALL LCA's from 1962 to 1976 are all the same thing, and interchange throughout all the A body line of cars.
The only thing is if a sway bar mount tab is welded onto the arm.
1965-72 tabs are one style.
And 73-76 tabs are another style.
But either sway bar arm, with tabs, will fit, work, interchange, in all the years, if wanted too.

Can't answer about center links.

All A body LCA's will have the letters VL stamped into the front metal, of the arm.