Dual quad 340 intake manifold with carbs and new, A body SS headers

I believe the D64 intakes are a specific fit to the '64-65 273's only, due to the bolt mounting angle on its heads. The Edelbrock D66 dual carb intake would be the one to fit '66 and later LA small-block engines.

Was this manifold remachined for correct fit on a later LA engine?