I have seen many trucks with drilled frames, to install the reese L shaped brackets on the frame. I understand when a guy already owns the reese hitch and wants to reuse it from a previous truck, but why deal with the rails on the floor of your truck. It would be a pain installing the frame brackets on a 3rd gen truck as you have to fish the bolts from the back of the frame with a wire, because of the boxed frame instead of the older C channel design. I could install 4 B&W's to one reese ( there are other brands like the reese so discussion should be about any hitch with similar brackets ) ( as well there are other types of under bed hitchs like the B&W, pop-up, drop-n-lock, draw tite,cody, even a B&W knock of that was built oversees, that was a total rip off that I saw at the SEMA show) I know that it is expensive, to buy a new hitch, but isn't your Ram worth it? Under bed hitches do have one fault. The brackets that fit the frames change with every change of body style and many require purchase of a new hitch as a guy trades trucks. If you do fab a hitch DO NOT use a 2 5/16" ball that is intended for a bumper pull trailer. Get the special ball for a gooseneck usually has a 30,000 pound rating. The also will make it with a slight rise at the base of the ball. This is usually important so that the gooseneck coupler can have room to close. I looked at a 03 and saw a cobbled up hitch in the bed with a bumper ball in it, and walked away. Heck I saw a truck upfitter install flatbeds on 6 F-650s all of them got the bumper balls. That coulda killed someone. Sorry for the long post.