For Installation of Headers to Cylinder Heads
Fits 260, 289, 302, 351W, 351M, 400M (Windsor / Cleveland / M-Block Engines)
Fits Most Short & Long Tube Headers w/ Up to 5/16" Flange Thickness
Will Not Fit: Exhaust Manifolds
SPECS
(16) 3/8" x 3/4" Allen Socket Head Bolts
(16) 3/8" Mil-Spec AN Washers