Same as manifold Part Number 12363420 (see above), but designed for use with a Holley carburetor
Dual-plane design requires bolt kit Part Number 12367959, which includes 16 bolts (8740 chrome-moly 3/8 "-16 x 1.5" with 3/8" hex head and 16 5/8" O.D. washers), and manifold gasket kit Part Number 12366985
Accepts air conditioning and alternator brackets and a late-model water neck
NOTE: Will not fit production Corvettes, and may not fit Chevelles. Manifold carb flange height is 4.450".
NOTE: Open carburetor spacer is not recommended with use of dual-plane manifolds.
