It looks like some clarification is needed on this subject. I own a 2008 Ford Ranger XLT Supercab 2dr 4x4. I recently upgraded to a Readylift leveling kit. I used to have my front suspension set with a max torsion key crank and 31x10.5x15 tires. The torsion key crank left the front suspension too stiff and the tires rubbed. There are a few key tips when upgrading to a Readylift Leveling Kit. It is HIGHLY RECOMMENDED to upgrade to extended length front shocks during the install process. The reason being that when the new torsion keys are installed the stock shocks have to be extended unnaturaly to accomodate the 2.50 inch front lift. When the old shocks are maxed out like that there is nothing to allow them to actually compress and "shock" anything. As a side note, it also causes the bushings to become flattened which also can cause unnatural wear and risk damage to the mounting brackets. In short, using the old shocks will make the vehicle behave like a bobbal head toy. I recommend using the Rancho RS5000 1.25 to 2.25 inch extended shock part #RS5374. Once you install the new torsion keys, rancho shocks, and have an allignment done; the ride quality will be restored to stock quality and will neither be too stiff or too weak. If done correctly, the whole thing can be done for somewhere around $500 to $600 (if your not installing it your self). Advance Auto had a sale on the shocks when I purchased them for $56 a shock, basically half price. Some minor adjustments may have to be made to insure a secure and safe fit. Readylift recommends rechecking the torque settings after a month or so to insure nothing was installed incorrectly. Hope that helps.