I bought this because I bought the Novak delete and their fuel inlet hole was tiny which pretty much defeats running larger diameter lines in the rest of the fuel system. Installation instructions were thorough. I did cut one graduation off the supply and return barbs to make the locking ring easier to install. I did swap the return barb to a 5/16 about review stating TJ Regulator delete." to match the return line. I am still debating installing a 45 or 90 degree fitting for the return side. Required tools: cutoff wheel, small and medium round file, side cutters, step drill. I'd your system is returnless just install a 1/4 npt plug in the return side.