240z Sending unit question

I am in the middle of a fuel tank refresh. Tank is out to Rad shop for cleaning and coating. Meantime I am checking my sending unit and gauge reading. Do these pictures of the gauge reading look right at max float and min float levels travel with the sending unit?
what else should I do?   Hoses are 4 years old. Ran a can of carb cleaner through the supply and blew it out.  
How many gallons does your tank hold?