Fuel pump is mounted between fuselage and wing stub, with access from below the plane via the fillet.
Right tank is the main tank.
Note that the compartment closest to the fuselage will serve as an internal header tank. The trap door allows fuel into the header tank but not out. It is simply a piano hinge hung over the hole such that it only opens to the inside. The baffle keeps fuel from starving the fuel injection pickup, and also functions as a sending unit mount. The aluminum lines are floxed into position thru the highest point of the left side of the tank, so if leaks develop, they will rarely be directly exposed to fuel.