Demco Hijacker frame brackets are engineered to fit all major makes and models of trucks. The SL Series uses a manual slider rail that runs front to back in the truck bed and attached the bed rails with six bolts to connect to the brackets underneath. Fits 1997-2003 F150, 6.5' and 8' boxes; 2001-2010 Silverado/Sierra 2500/3500 HD, 6.5' and 8' boxes including new body style; 2007-2014 Silverado/Sierra 1500, 6.5' and 8' boxes with tube frame; 1999-2007 Silverado/Sierra 1500/2500, 6.5' and 8' boxes; 2001-2007 Silverado/Sierra 1500 HD, 6.5' and 8' boxes; 2002-2008 Ram 1500, 4x2 and 4x4, 6.5' and 8' boxes including Mega Cab; 2013 Ram 1500, 4x2 and 4x4, 6.5' and 8' boxes including Mega Cab; 2003-2012 Ram 2500, 4x2 and 4x4, 6.5' and 8' boxes including Mega Cab; 2003-2012 Ram 3500, 4x4 only, 6.5' and 8' boxes including Mega Cab; 2003-2012 Ram 3500, 4x2 only, 6.5' and 8' boxes including Mega Cab.