Fabricatde the right T-405 tank attach angle and pre driled with the rivet holes. Pre drilled the rivet holes in the left T-405 tank attach angle. Matched drilled the left and right T-405 to the rib and T-410 reinforcing plates. Drilled one T-813 Fuel Sender Plates to the most outboard internal tank rib. Installed the 3 nut plates. Cut the corners of the T-813 to make clearance for the fuel tank stiffeners.