Look for a 4-barrel intake manifold with casting number 3837109. That was the original 4-barrel intake manifold casting number on my 1956 Chevrolet 210 Del Ray with a Power Pack option. .
The 4-barrel manifolds were not specific to the body style. The WCFB 4-barrel carburetor came with the Power Pack Option which included a dual exhaust system, rated at 210 HP and was available on all body styles.
The 1956 intake manifold with casting 3837109 has small ports that matched the small ports of the 1955-56 heads. I replaced the 1956 intake manifold with a 1957 intake manifold when I installed a pair of 1968 #3917291 double-hump heads.
The intake ports of the manifold should match the intake ports of the heads.
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