QFT Guppy, and lol, too true. Although one wing, in all fairness, is a larger chunk than a few others I can think of. I still want to look into it, it seems strange that they all (that I've seen) have the "capability" but didn't utilise it (you can clearly see the plugged ports for the ommited guns).
I suspect, highly, that more than one possible package/configuration was utilised in WWII.