This kit is for the racer who already has a Direct Port System and wants to transfer their system to a new intake manifold re-using their original nozzles, solenoids, and distribution blocks. Kit 350-71880 for V8 includes sixteen 12'' x 3/16'' stainless steel tubes; sixteen ferrules, compression fitting nuts, and tube sleeves; and eight each red and blue tube nuts. Kit 350-71881 for 4-cylinder engines includes eight 12'' x 3/16'' stainless steel tubes; eight ferrules, compression fitting nuts, and tube sleeves; and four each red and blue tube nuts.