360 heads on a 318 of any benefit?

Interesting, very. I'm a bit behind on new engine tech. Not much desire to catch up. (Must be getting old)
Doesn't Honda have a variable intake manifold. Something about a 2 in 1 intake? (For lack of better words.)
Someone told me they have an intake that has doors on the inside that open up (For lack of better words again) from a dual plane design to a straighter shot single plane design?

The intake you are thinking of is often referred to as an active intake. You don't have to go any farther than under the hood of my 2000 Concorde to find it.