Tapped and installed 3 additional hard points into sump tank. Two 3/8 NPT on lower part for fuel intake from strakes. One 1/8 NPT on outside of lower center of tank for sump valve. Install pretapped low fuel warning hardpoint on upper right side. Tapped two outboard upper preinstalled hard points to 1/4 NPT to be used as vent and fuel return lines. Tapped lower center to 3/8 NPT for engine fuel feed line. Used cabo and 1 bid to install hardpoints. Coated inside of tank with cabo slurry and epoxy. Same for back panel.