The fuel cells do come with a GM style sending unit.
Above Added: Wed July 27, 2011, 1:35 pm EST
Why buy a cheap poly cell when you can buy a fully polished aluminum fuel cell for the same price. These Fuel cell's are made from precision welded Fabricated Aluminum and then polished to a high luster. These cell's includes the foam insert, aircraft style fill cap, and the inlet and outlet fuel fittings.
These fuel cells are a excellent choice for street/strip cars, drag cars, street rods and trucks.
Buy yours today.