sagacious
09-12-2008, 03:40 PM
i have a 73 nova and im doing a minitub conversion and i've found the 20 gallon 71-73 mustang tank fits perfect for my dimensions available. so i ordered the tank. when i got it here i noticed there are 3 openings. 1 for the filler neck, 1 for the sending unit and 1 more underneath the tank. the one underneath the tank is the same size as the sending unit hole and uses the same lock-ring setup. what is suppose to go in there??