Are you tired of ill-fitting headers that have to be "massaged" into place? Hooker's RacingHeart division is here to eliminate those hours of frustration! Holley is pleased to introduce three new Hooker RacingHeart offerings for the third-generation GM F-body platform! With options available in 1-3/4 and 1-5/8 primaries, they are designed to accept angle plug heads for optimum spark plug boot clearance. They are built with 304SS for maximum corrosion resistance and light-weight. They have a 3/8" flange to prevent warpage and include a collector merge spear for maximum exhaust flow, balance and velocity. Built for angle plug cylinder heads, they feature a tight-tucked design providing maximum engine bay and ground clearance. O2 sensor bungs are included to simplify EFI installations if desired.