I love how mentioning, let alone building, something from WWII opens the idiot floodgates. No, it is not a "Secret bomber." No, it does not need gunner positions. The Ju 52 was an unarmed paratrooper transport that relies heavily on fighter escorts, the lack of which being a major contributor to their sometimes miserable service record.
Also the nose looks too long, but other than that it's good.