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The first step is to drop out the stock live axle with leaf springs. This setup is simple and sturdy, but doesn't provide much control on uneven pavement.
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These are the components of the IRS. Note the triangular sub-frame that not only carries the differential and control arms, but reinforces the chassis as well.
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The frame rails have to be notched and reinforced to make room for the new control arms.
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Next, bolt in the cradle that holds the differential and control arms.
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The upper arm attaches to the cradle first.
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Next, fasten the lower control arms. Note the beefy bracing and mount for the shock.
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Bolt in the coil-over shocks and adjust the ride height.
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Install the half-shaft and hub carrier.
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Calipers for the disc brakes are an option with the IRS package, or you can choose your own.
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Stainless Steel Brakes supplies a set of slotted and plated rotors for the disc brakes, replacing the antiquated drum brakes used on the factory live axle.
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