P28 1979 PONTIAC AXLE IDENTIFICATION CODES NDICATES POSITRACTION A SERIES ASSEMBLY CODES 2 14 RATIO 2 29 RATIO RINGGEAR RINGGEAR AK 7 50 RA 7 50 BK 7 50 AH 7 50 BH 7 50 AT 7 50 BT 7 50 2 41 RATIO 2 56 RATIO RINGGEAR RINGGEAR AZ 7 50 RC 7 50 BZ 7 50 AA 7 50 AJ 7 50 BA 7 50 BJ 7 50 AY 7 50 BY 7 50 2 73 RATION 2 93 RATIO RINGGEAR RINGGEAR RD 7 50 RE 7 50 AB 7 50 AG 7 50 BB 7 50 BG 7 50 RX 7 50 AX 7 50 BX 7 50 3 23 RATIO 3 42 RATIO RINGGEAR RINGGEAR AD 7 50 AE 7 50 BD 7 50 BE 7 50 AU 7 50 BU 7 50 1 1987 GENERAL MOTORS SERVICE PARTS OPERATIONS PONTIAO 21 46