Not sure. But I have both installed and they work great. maybe you have a different leveling kit. My leveling kit cost $229 @ Big O Tires. and the Ready Lift was almost $400.
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2nd place is 1st's loser!
2012 FX4 Waldoch M80 Edition Supercrew, 3.5L Ecoboost, Flowmaster Exhaust, K&N Air Filter, Road Armor Grill Guard, huge smile! 
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