Hooker continues to set the standard of performance with the Blackheart line of engine swap system components. We are proud to offer these 304 stainless steel long-tube Coyote engine swap headers for 1979-1993 Ford Mustangs. These headers feature 1-3/4" primary tubes with 3" formed merge collectors and are engineered to offer premium fitment on vehicles equipped with a Maximum Motorsports (MMKM-2.1 only), AJE MU-40-UM, Team Z TZM-KM-SWAP1 or TZM-KM-SWAP4*, or UPR Products (1979-1993 Mustang mod-motor) engine K-member.