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Today I completely finished the driver side of the rear suspension and also removed the passenger side rear knuckle to finish tomorrow. I changed the OEM eccentric bolts that allow small adjustment to the rear suspension settings to bolts that lock out the eccentric bolt adjustments. You can see the bolts side by side in the title image. They exist in 2 places on each side and are the "cam" type bolts that rotate off center. My entire suspension is now fully adjustable, each arm has adjustments, so these bolts are no longer needed.

The bolt kit is very simple, it uses square aluminum spacers (on each side of the bolt) that fit inside the small indentation on the subframe. The square spacers fit tightly and no longer rotate, so all adjustments will be done by the SPL suspension arms. This will prevent the OEM eccentric bolts from changing settings if a large bump or pothole is hit, and makes fine tuning the alignment very predictable.

Here you can see the the lock out bolt installed and part of the SPL adjustable arm.