They're diagonal links with heim joints at the upper ends. They keep the horizontal control arms from having to rely on the sway bar to control caster, like a radius arm would.
They are only tacked on in the pics. I've made the pieces to box the whole arms in with, top and bottom. I'll weld them at work tomorrow.
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Yetibone
'71 1302S 1.8
'73 1303S 2.3
'83 928S 4.7
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