1981 Ford F100/150, Bronco. Original 9" Rear End-Axle Differential Tag. For 3.50 Locking Gears (Limited Slip). This is an ORIGINAL FORD TAG. Stamped [ WFE-AW 0L11 and 3L50 9 S319B ] A Rare to Find Original Tag. Please email with questions. 081322-12 WE HAVE AN EBAY STORE WITH THOUSANDS OF ORIGINAL and NOS FORD PARTS. CHECK IT OUT.