what fits under a flat hood?

JamesDart, I don't know if you remember GolferJohn with his dark green '68 Dart GTS clone convertible. He pulled a 340 out, installed an AlterK and the MP 5.7 crate motor I first bought for my 'Cuda. He also put Bill's rear suspension in too. Actually, a shop did the work for him. He lived up in Washington state and the shop was up there.

Anyway, it fit under the stock hood with the MP single four barrel manifold / throttle body and an air cleaner similar to a round 340 air cleaner, but with totally open element. It fit fine under the hood. At one point while I had the engine, it was mocked up in my Cuda and I put a real '68 air cleaner on it. I didn't have the hood on, but by "eyeballing" it, I don't think there would have been a problem...