Does any one know if the 55 and 56 A intake manifolds are the same port wise? Any differences other than the vacuum port located in front of the carb on the 55 (and not drilled on the 56)? If the 56 is drilled like the 55, is there any specs on how deep, etc to drill? Thanks

54 Victoria 312;  48 Ford Conv 302, 56 Bird 312
Forever Ford
Midland Park, NJ