Stop in for a cup of coffee

What's the difference between the "plymouth" center link and the "valiant" center link???
From the picture one of them has the idler arm and the pitman arm going through the center link from the bottom on the other picture the pitman arm and the idler arm go through the top of the center link
I need to get a parts catalog.

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From the picture one of them has the idler arm and the pitman arm going through the center link from the bottom on the other picture the pitman arm and the idler arm go through the top of the center link