These polished 304 Stainless Steel tig welded Y-Dumps are perfect for Single exhaust cars like late model trucks and 1982-1992 3rd Gen GM® F-body vehicles. Add Pypes HVE11 or HVE12 or most other brands of electric cutouts for the ultimate quick change from closed to open exhaust! All you need is about a 12"-15" of straight pipe of your exhaust cut out and this added in.