1988-1998 GM C1500 TRUCK / SUV 2WD 2007-2014 CHEVY / GMC SILVERADO / SIERRA 1500 2WD / 4WD 1999-2006 CHEVY / GMC C1500 SILVERADO / SIERRA 2WD CLASSIC 2001-2010 GM 1500HD 2500 3500 HEAVY DUTY 2WD / 4WD A perfect match for Maxtrac's leveling kits or lifted spindles, these blocks are easily installed to give more clearance in the back of your truck. Ubolt hardware must be ordered separate from blocks. SPECIFICATIONS Ductile Iron Construction 100% Bolt On Installation Increased Ground Clearance Angled for pinion correction DIMENSIONS: 9x4x3