There are a few kits available. Your QX4 has the same suspension as Pathfinder, anything for a 1996-2004 Pathfinder will work on your ride. This chassis is called "R50" so remember that, you will read it a lot when researching lift kits. You can purchase 2" lift springs at AC
http://www.4x4parts.com (they also have a message board, with a great FAQ on lifts in the R50 section. A lot of information there) You can purchase 1" lift springs at
http://www.rocky-road.com/suspensions.html You can purchase 1" spacers from the admin guy at
http://www.pradolifts.com And the BIG BOY, 4.5" bracket lift is in the works at
http://www.pradolifts.com Prado does not have the products section ready but the forum is alive and kickin with info....
Modified by fueler at 1:11 PM 2/19/2007