By chance, I got the three pictures of MGP's suspend view, which can show some details of the front suspension and upright, but not clear and sufficient enough.
Is anyone here who has more pictures of it?
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There is a little device at the end of lower A arm, which seems can be connected to the pushrod.
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Here we can also see the thing at the end of the A arm.
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It is also the detail of the end of the A arm.