Hi Steve. On the B model wing (or the Model 5 wing) the aux tanks get installed in the 4th bay from the tip. There is room for the boost pumps in the adjoining inboard bay where all the aileron stuff is. Good luck. Mark
My fourth plane. Purchased the rib/spar kit and the tail ribs. Hate making ribs. Have both wings riveted to inspection. Bottom skin not attached. Have alierons and flaps to do this winter. Have 1000 hrs in so far. Building to put directly on amphib floats. Located on Edmonton Alberta. Semi retired pilot.