It really depends on how you use the car, how the car is set up, and how the engines are built.
Without knowing that it is impossible to answer.
Often one thing limits the rest. For example the setup could eventually be horsepower limited by the blower size in the ability of the blower to pass air volume, not by the engine displacement or strength. In this case extra displacement would only reduce blower pressure. You could have the same power despite less displacement, and wind up with better economy and longer life from having a stronger engine.
It really requires knowing about as much as picking a cam.
When my engine blows, and it probably will, I'll stay with a shorter stroke. This will provide a much stouter bottom end, longer ring and bearing life, and better fuel economy. I'll just take the blower up to it's horsepower limit, which will be the same if it has 330 CID or 450 CID.
If it was naturally aspirated, I'd go for maximum cubes. Not with a blower.
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