Maybe with a mill, and a shaper would help. But there would be so much additional aluminum needed that it would be easier to machine the places needing built up smooth and welding blocks of aluminum plate in place. It would be easier to buy a small block Mopar aluminum manifold base kit from Weinle and dissect the Chevrolet out of the manifold and fit and weld the difference. It’s beyond what I want to attempt, and I’m borderline insane half the time, if not more... it’s a shame that aluminum is so difficult to properly vent in a casting mold. If it weren’t, almost everything would have been made out of it a long time ago.
