1999-2006 Chevrolet Silverado 1500 Fleetside 78.0 Bed; 2007 Chevrolet Silverado 1500 Classic Fleetside 78.0 Bed; 2001-2003 Chevrolet Silverado 1500 HD Fleetside 78.0 Bed; 2005-2006 Chevrolet Silverado 1500 HD Fleetside 78.0 Bed; 2007 Chevrolet Silverado 1500 HD Classic Fleetside 78.0 Bed; 1999-2004 Chevrolet Silverado 2500 78.0 Bed; 2001-2006 Chevrolet Silverado 2500 HD 78.0 Bed; 2007 Chevrolet Silverado 2500 HD Classic 78.0 Bed; 1999-2006 GMC Sierra 1500 Fleetside 78.0 Bed; 2007 GMC Sierra 1500 Classic Fleetside 78.0 Bed; 2001-2003 GMC Sierra 1500 HD Fleetside 78.0 Bed; 2005-2006 GMC Sierra 1500 HD Fleetside 78.0 Bed; 2007 GMC Sierra 1500 HD Classic Fleetside 78.0 Bed; 1999-2004 GMC Sierra 2500 78.0 Bed; 2001-2006 GMC Sierra 2500 HD 78.0 Bed; 2007 GMC Sierra 2500 HD Classic 78.0 Bed