CenterLink

physixx said

There is a difference. The 67-71 center link is a different design than the later 72 and newer cars.

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Actually...73 and newer, NOT 72. You probably knew that.
The difference is the tapered holes for the tie rod ends. One design has the idler and pitman arms on top of the link with the studs pointed towards the ground and the other is reversed with the studs pointing toward the sky.