Allstar Performance Large Wing Head Quick Turn Fastener - .500" Long - 7/16" (10 Pack) BR20053 spread port headers are required

spread port headers are required since the center ports are spread further apart then stock GM products

1986-1987 Mercury Topaz

1-3/4 in OD

1968-1974 Chevrolet C20 Suburban

Allstar Performance Large Wing Head Quick Turn Fastener - .500" Long - 7/16" (10 Pack) BR20053 spread port headers are requiredSteel Wing Head Fasteners 7 16" x . 500" Long Silver Specialty items for the Shop, Trailer and Track. The Allstar Performance brand offers thousands of hard to find, specialty items that cover many segments in the performance aftermarket. For over 30 years, customers worldwide have come to rely on the quality, affordable and practical items available from Allstar Performance. Product Description: Quick Turn Fastener Wing Head 7 16 x 0. 500 in Body