ReadyLIFT products do not require any permanent modification to factory parts and never compresses the factory springs or require cutting the strut studs. ReadyLIFT will not affect your factory OEM ride quality or comfort level.
I had the local alignment shop install this kit along with new Monroe front struts and rear shocks on my 2007 Nissan Xterra . The struts / shocks were dirt cheap thru Rock Auto . The ride has firmed up some and it raised it up around 2 inches for a more aggressive stance . When you see a non lifted Xterra or Frontier , you will realize how much better your vehicle looks . You can`t beat the price !