My comment �superior design� is with respect to strength only. I am not a suspension designer, but I can recognize the additional stamping welded within the lower A-arm. The top A-arm has one plate welded to the bottom of the rails and the ball joint casting maintains the rails parallel. I would have expected a plate on the top of the rails to form a box. I added a plate to bridge the to rails and doubles as a reference for the ball joint casting.
Please comment or recommend if I have over-looked something.
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