Very easy to install, just remove the OEM stock hook and ours bolt right in its place, for the non 4x4 they will fit also just drill a 1 inch hole though the plastic cover and NO NEED TO MODIFY OR REMOVE BUMPER. All the frames of the trucks have existing holes for the tow hook receivers. if you look under the bumper you will see you can get to the frame to install them.
We have receivers and the new big D tow hook for the 2005 to 2017 4x4 trucks, they will also fit the 2 wheel drive with a cut out. We are becoming a vendor on this site if we ever hear back from them. They come with the receiver you swap out with the existing d ring. tow hooks can be unscrewed from receiver if needed. www.zl1addons.com