Ernie,
He said he is building the engine with the dual plane intake. The one that I had came with the dual 4s and a high riser single plane intake. I removed that very soon and went to a dual plane single carb. and then sold the whole mess as I like to drive in town at less than 80 MPH. I had this engine in a 1965 Galaxie and the motor was built as a race engine so it did what it was supposed to do.
Ron
