XB2G-1: для оценки был построен усовершенствованный вариант BG-1, но получить контракт на серийный выпуск не удалось; он имел убирающиеся шасси и фюзеляж увеличенного сечения для внутреннего размещения 454-кг бомбы
Last aircraft designed by the Great Lakes Aircraft Corporation, the XB2G-1 was not selected for production and its manufacturer went out of business.
Great Lakes dive bomber. It will be seen that the original version has been developed into an exceptionally clean biplane (photo) with a retractable undercarriage and a performance much superior with the same engine.
Internal bomb bay and retractable main undercarriage were insufficient to bring performance of the XB2G-1 biplane to the level of its monoplane competitor, the Northrop XBT-1.
Wikipedia