1966 Ford Mustang, Fastback, Coupe, Convertible, GT - 289 With A/T.     AUTOLITE 289 4V CARBURETOR with Automatic Choke.   This is an Autolite 4100.  This is an ORIGINAL FORD PART.  Stamped 6Z B on the LH lower Flange.   Has (1.08) Venturi Bore Size.    The Carburetor is in Great Original Condition.  This was removed from a running engine. I did not drive the car, but it did start and run. The Carburetor Looks to be at least Mostly Complete.  The Choke Plate and lower butterflies open and close very well.  It is Very Clean.  All the linkages are there.  No Real Rust or corrosion.  No visible cracks or damage. Overall, this is a Great Original 289 4V Carburetor.    Impossible to Find Original.   Please email with questions.          040924-1          WE HAVE AN EBAY STORE WITH THOUSANDS OF ORIGINAL and NOS FORD PARTS. CHECK IT OUT.