7686-2 Shackle Reversal System for CJs with YJ Springs 2-1/2" 1976-1986 Jeep CJ-5, CJ-7, CJ-8 vehicles. This system has all of the features as the 7686-1, however it comes with wider tubes and bushings to insert in the frame so you can install the wider Jeep YJ Wrangler springs. Why, you ask? The Wrangler springs typically have a softer spring rate than CJ's adding to flexibility and ride quality. This system comes with the pivot brackets fully welded. Complete with instructions. The front driveshaft will need to be modified with a long travel slip in stub. Wider U-Bolt plates not provided.