Here you can see the sumped stock tank and suction line to the pump. I bought the sump from Competition Engineering, but it only had 3/8" NPT bungs. 3/8" isn't nearly big enough so we welded a 3/4" bung in one side of the sump. The green valve on the right is a drain valve for the tank. The suction line is a -12AN through an SX filter to the pump.