1965 4-barrel intake

There are no original 4 barrel intakes from 64 cars, they didn’t have a 4 bbl option in 64. However, a 65 intake will have the same hole angle as a 64 motor, and there are some few and far between aftermarket intakes that have the old bolt angle. Remember too that 64/65 have a smaller bolt thread size 5/16” vs. the 3/8” from 66 and up. You can use any newer aftermarket intake, but I would open the holes up a bit and use a conical washer like on the exhaust manifolds. They’re thicker, and have a rounded top shoulder that would allow the bolt to apply even pressure.