For BB-Chevy Strut Front And DragstersThis header is designed to fit Pro Stock - Bickel style strut front end chassis. Will work in Comp and Super Gas applications as well. 28'' equal length design. CNC-laser machined flanges feature raised port location for increased power. Unique port gussets eliminate cracking caused by tire shake and muffler applications. High temperature, silver ceramic coated inside and out.