Drilled holes in tanks for weld in bungs.for return fuel line installation.. Located and drilled hole for weld in bungs for fuel gaurdian sensors. Set fly cutter to cut holes for fuel gauge sending units in tanks. welded aluminum bungs in tanks, for return line and fuel gardian sensor. Layed out fuel plumping configuration of possible installation design for firewall mount fuel pumps and gascolator. as per WW design.