Centerlink ???

I was looking at a Duster drag car the other day and it had what appears to be a factory Mopar centerlink that has s bends inside of the Pitman arm and idler arm holes that moved the center of the link forward about 3-4”. It used the pre 73 type where the link sits on top of the idler and pitman arms. Any idea what vehicle this was used on? I don’t have any pictures.