I saw them on Muscle Car last weekend. I think they would look sweet on a good project car, but damn they are expensive.
Stack EFI Manifolds
Stack EFI Manifolds
This is it. All the benefits of that setup can be had if you were to just buy the belled ends(the "velocity stacks") and put them on the end of a shortened-runner C manifold. And FYI, the belled ends by themselves are NOT cheap.Traditional plenum manifolds, whether EFI or carbureted, are just as capable of making good peak/high-rpm power.