Aluminum 421 SD manifolds from original pontiac tooling. Hi heat alloy aluminum. Ceramic coating recommended.
Two versions available A-all D-port heads; B for 63 SD "980" head only.
Fits 61-63 B-body
Miniature starter or upside down starter is required.
Collectors are required for each manifold.
OPTIONAL CERAMIC COATING:
Thermal barrier ceramic coating on interior and exterior. Choice of Silver or Gray. 3-year Guarantee. Will not burn off, fade or peel. Reduces header temperature 40%! Silver is chrome-like. Gray looks stock.