Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties. Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat. Hooker recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage. Please call Hooker tech service at 270-781-9741 for additional information regarding ceramic coated exhaust products. The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up. Hooker does not recommend the use of header wraps as this will void the warranty.<br><br>NOTE: Will fit with Dart Windsor head.<br><br>NOTE: Requires the use of 1966 and later motor mounts and frame mounts Ford P/N D00Z6038G and because of possible chassis sag, the shock towers must measure a minimum of 33-3/4 in. measured between the top of the shocks. Header will fit with C-6 transmission.<br><br>NOTE: See instructions for other notes.