$300 +shipping from 87935 Complete manifold carb & linkage.
Tea Pot carb & Manifold, yellow manifold marked "56" with carb linkage, trade for a 57-59 312 4V manifold & carb. Looks like they run about $250 average of those currently on eBay $600-900 rebuilt and $100 -$400 used some whole and some for parts.