Looks like a deformed standard Mustang hose with a straight neck at the intake. Seems to me my 74 351W in my Galaxie 500 had that type of setup but it's been 25 years since I last closed the hood on it and Ive messed with so many cars since.
Looking around some more, I think that is a Fairmont hose. The 70's Fords [Ranchero, Granada] look the same but are 1-1/2" at the radiator.
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