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Here's the CPP tubular upper control arm in place with the original alignment shims. Snug up the bolts, but before attaching it to the spindle, install the coil springs. Also notice the upper shock mount here. GM used a single shear (one-sided) mount on light-duty trucks, and many of you out there have broken them. CPP makes these double-shear upper shock mount brackets to solve this problem; it also has new shock studs. It's a smart and inexpensive upgrade.