I have SPC upper/lower arms up front, UMI arms in the back, Hellwig swaybars, SPC lowering springs, Bilstein shocks, and a 12.7:1 steering box.
The LeMans has surprised many people with the way it drives, and I’m very happy with it. I think the steering box is probably the most apparent change, makes it drive a bit more modern. Less power assist and less input required to make it turn.
I am also a big fan of the SPC control arms. What convinced me was the adjustability of the uppers, no more alignment shims, much more precise adjustment. Your alignment guy WILL be much happier.
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67 LeMans, 326, M20, 3.31 12 Bolt
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