When installing an axle flip or 4 link on the rear of your truck, you'll probably need to re-work the shock brackets. There are shock extension kits available to reuse the stock mounts, but if you don't mind a little welding a fresh set of brackets will look better and allow you to dial in the shock position far better than the stock stuff.
These brackets are cut from 3/16" steel - the lowers weld directly to your axle, and the upper tabs are made to weld to a 1.25" OD tube that you can run across your frame rails. Don't have a local source for tubing? We can provide that with this kit for you too!