I'd have to doublecheck but I'm pretty sure at least the 1966 manifold accepts a squarebore carb with a square (5-1/4"?) pattern (my guess is that a 4G would fit). I had a '64 intake that took a squarebore carb but the side- to-side bolt width was less than the front-to-back width.
Brad O. > Were there any early style (64-67) 283 manifolds on which a square bore > Holley 4 barrel would bolt onto directly? By early I'm thinking of ones where > the oil fill pipe is at the front of the manifold.
