I have provided forged-aluminum suspension pieces to the automotive industry for lightweight low-unsprung-weight suspensions, even domestic trucks, ... I'm not sure what part of the cast iron and stamped steel 124 suspension is lightweight. What the car is, is stiff, with 30% of the body being high-tensile steel and the highest natural-frequency chassis in the industry (54hz IIRC).

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Gone to the dark side

- Jeff