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Last year, we upgraded to CPP's front-end package of tubular upper and lower control arms, springs, anti-swaybar, idler arm, and inner and outer tie-rod ends with new stock adjuster sleeves. This photo shows our setup at the time it was upgraded. This view does a good job showing the overall geometry and function of the GM A-body steering design: steering input comes from the Pitman arm attached to the steering box. That motion is transferred directly to the drag link-sometimes called the relay rod (center). The idler arm provides a neutral pivot point, and is geometrically similar to the Pitman arm. The tie rods are the links that transfer motion from the drag link to the spindle. A failure from any part of the system can result in a loss of steering. Not good.