These Hooker BlackHeart LS swap headers fit 1963-1967 GM C-10 2WD Trucks. The long-tube header design provides optimum engine performance with stainless steel construction for strength & corrosion resistance. These Headers are designed for use with BHS538 engine mounting brackets with wide frame rails. Easy installation since these headers are part of the Hooker BlackHeart swap system (all parts engineered to work together as a system for simple bolt-in LS engine swap).