The innovative design of the HappiJac Tie-Down combines frame strength and sound engineering principles to create an I-beam truss structure that makes your camper an integral part of the truck, providing unsurpassed strength and security. Its Direct-to-Frame Mount is strong and easy to use. While other tie-downs may "hold your camper down," only HappiJac Tie-Downs prevent camper movement in all directions â up-down, side-to-side, and front-to-back. Note: Kit does not include the required HappiJack Turnbuckles and Stabilizing Bar. FT-CG07 Frame-Mount Tie-Down Kit fits• 2007-2013 Chevy Silverado/GMC Sierra (extended cab only) Prevents camper movement in all directions Does not include required Turnbuckles & Stabilizing Bar | Lippert HappiJac Frame-Mount Tie-Down Kit, FT-CG07, '07-'13 Chevy/GMC Extended Cab