Aluminum control arms can also be found on early 99 Malibus.
Notes: Bushings are the same and yes, the ES set works fine. The ball joints for the aluminum arms are different than the standard ones, you'll probably want to replace them on general principle. Overall you will save a few pounds of unsprung weight which should improve handling somewhat. I've been told by an engineer that the resonance of aluminum is better which should minimize road surface induced vibrations - could be magic??? Get em from a junkyard, remove bushings and ball joints, clean well (wire brush), clearcoat (moldy aluminum looks gross), reassemble and enjoy. Nice afternoon project.
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