Could the Fairey Gannet carry a torpedo?

How much larger would the Fairey Gannet need to be to serve as a torpedo bomber?

Probably not larger at all; its payload and bomb bay were already adequate if the selected torpedo physically fitted.

The Fairey Gannet could carry roughly 2,000 pounds of bombs, torpedoes, or depth charges and had a substantial internal bay. It probably needed no larger airframe to become a torpedo bomber. The main constraint was whether the chosen torpedo would physically fit the bay.