Does anyone know what size the factory fuel lines are that connect from the fuel bowl to the hpfp? Also how would one tie in another line for a return line from a second pump into the fuel system? Would you be able to tee both the line coming out of the fuel bowl feeding the hpfp as well as the return line from the stock located hpfp back to the fuel bowl? Just trying to figure out how to pipe lines to a second hpfp. Both feed lines and return lines.