We had these intake manifolds casted for us by Indy. They are supercharger intakes that fit 8:71 - 16:71's. They fit the Merlin Super Tall 11.625 blocks and are for Big Chief cylinder heads. Normally you would have to make a sheet metal intake for this combination, this route is much cheaper. For any questions call us at 305-893-5018 or email Albert@cobrapower.com
