Unity Automotive Delivers top of the line quality suspension parts made to insure a trouble free installation and long lasting reliability. Elite Suspension Conversion Kits offered by Unity introduces solutions to retrofit steel springs converting your air ride to a more reliable passive suspension setup. This Kit Fits 2004-2007 Buick Rainier, 2002-2009 Chevrolet Trailblazer, 2002-2006 Chevrolet Trailblazer EXT, 2002-2009 GMC Envoy, 2002-2006 GMC Envoy XL, 2004-2005 GMC Envoy XUV, 2003-2008 Isuzu Ascender, 2002-2004 Oldsmobile Bravada, 2005-2009 Saab 9-7x - For 3rd Row and Light Towing