ALL 440's from 1967 through 1969 model years had the same intake manifold. Just bolt On the carb, choke, and vacuum fitting for your car.

The small mouth AFB from the 375 horse 440 engine has the wide bolt pattern on it. The 1967 383 small mouth AFB has the narrow bolt pattern. This might cause some confusion.

Yes the 350 horse C body had holleys, but the intake is not different.