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[*Valek*]

А разве не наоборот? Подрамник на V8 поставили стальной, а вот другие детали сделали алюминиевыми.

"The front suspension consists of MacPherson struts, with six-cylinder cars using an aluminium front subframe. Aluminium is used for the steering knuckles, outer strut tube and the spring pads, resulting in a weight saving of 21 kg (46 lb). V8 models also use aluminium in the steering box and several suspension links, to compensate for the heavier steel subframe."