Lift

Im trying to give my X a little lift, and I found this cheap one on web. can any one tell me if this will work or if anyone tried with something like this? My neighbors got Jeep ZJ and he told me that it goes between spring and the top part that touchs the spring. any idea??

Here is the link
http://www.ok4wd.com/keycat.aspx?rkey=021920040052329____001207831_____ _____01282___________

If you want to lower your Xterra, go for it. Lift blocks only work when the spring is above the axle, ours is below.
Besides, lift blocks are a sketchy solution regardless.

By the way, we have a suspension section for lift questions...