66 Dart Owners thread

Does anybody know where I can get the right gas tank sending unit, for a 66 dart or any early A . I'd post pictures but don't know how. The original one had a long straight wire arm with a float on it. The one I got has a short arm with the float and at half a tank it only reads 1/8 of a tank. Thanks in advance

Rock Auto.Com has them in stock.