I do not believe there is any intake manifold and carburetor air cleaner combination that can fit underneath the screen if a spacer is used between the manifold and the carburetor.
One of Marlin's Photographs did show a spacer plate but the milling operation only was applicable to the manifold carb base being milled.
I think an airgap manifold with the carburetor pad milled flat and a very short air cleaner assembly or plenum will fit under the screen. Barely.
Absolutely it will not fit with any sort of a spacer between the manifold and the carburetor
Larry
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