Why a Hercules-powered Sea Hurricane was impractical

Could a Bristol Hercules engine have made the Sea Hurricane more effective?

Possibly at low altitude, but the engine would require an airframe redesign that did not fit a program based on converting existing Hurricanes.

The proposed engine swap promises more power and potentially better low-altitude performance. The larger Bristol Hercules would require changes to the aircraft's structure and installation. Sea Hurricanes were being produced largely by converting existing aircraft rather than by launching a clean-sheet new build. The redesign burden therefore defeated the apparent performance gain.