GM PRODUCTION OPT IONS RPO FY LY USE DIV MODEL DIVISIONAL RPO DESCRIPTION G72 82 87 AXLE REAR 2 14 RATIO G75 82 87 AXLE REAR 3 62 RATIO G80 76 92 AXLE REAR POSITRACTION LIMITED SLIP G80 88 90 12 F AXLE REAR POSITRACTION LIMITED SLIP G87 76 88 GEAR RING 8 50 INCH G87 88 91 1 Y 3EAR RING 8 50 INCH G89 76 87 GEAR RING 7 50 INCH G92 76 91 AXLE REAR PERFORMANCE RATIO MERCHANOISING OPTION G95 85 88 AXLE ECONOMV RATIO HA3 82 89 AXLE REAR 5 29 RATIO HC4 76 92 AXLE REAR 4 56 RATIO HC7 76 92 AXLE REAR 5 13 RATIO HC8 76 87 AXLE REAR 3 21 RATIO HF7 76 91 AXLE HEAVY DUTY REAR 4 56 RATIO HF8 76 91 AXLE REAR 4 88 RATIO HK1 82 86 AXLE REAR 2 87 RATIO HPR 87 91 HEADLAMPS DUAL RECTANGULAR H04 76 88 AXLE REAR 4 11 RATIO JA1 76 87 BRAKE SYSTEM POWER LIGHT DUTY JA1 88 89 1 A BRAKE SYSTEM LIGHT WEIGHT DISC DRUM JA1 88 90 234 A BRAKE SYSTEM LIGHT WEIGHT DISC DRUM JA2 76 87 BRAKE SYSTEM POWER HEAVY DUTY JA2 88 90 1234 A BRAKE SYSTEM HEAVY WEIGHT DISC DRUM JA3 84 86 BRAKE SYSTEM POWER EXTRA HEAVY DUIY JA7 86 88 HANDLE PARK BRAKE RELEASE LEATHER WRAPPED JA7 88 88 2 N HANDLE PARK BRAKE RELEASE LEATHER WRAPPED USED WITH SE Y92 JA7 88 89 3 N HANDLE PARK BRAKE RELEASE LEATHER WRAPPED JA7 89 89 4 N HANDLE PARK BRAKE RELEASE LEATHER WRAPPED JA8 82 87 BRAKE SYSTEM POWER MEDIUM DUIY JA8 88 90 1234 A BRAKE SYSTEM MEDIUM WEIGHT DISC DRUM JB1 76 89 BRAKE SYSTEM MANUAL DISC DRUM JB3 76 91 BRAKE SYSTEM VACUUM POWER DISC DRUM JB5 76 89 BRAKE SVSTEM VACUUM POWER DISC DRUM JB6 76 89 BRAKE SYSTEM VACUUM POWER DISC DRUM JB7 76 89 BRAKE SYSTEM VACUUM POWER DISC DRUM JBB 76 89 BRAKE 5YSTEM HYDRAULIC POWER DISC ORUM JC4 82 87 BRAKE FRONT VENTEO ROTOR JD3 76 87 BRAKE SYSTEM HYDRAULIC POWER DISC DRUM JD5 76 89 BRAKE SYSTEM HYDRAULIC POWER OISC DRUM JD6 76 89 BRAKE SYSTEM HYDRAULIC POWER DISC DRUM JD7 76 89 BRAKE SYSTEM HYDRAULIC POWER DISCIDRUM JE1 76 92 BRAKE SYSTEM EUROPE EXPORT JF9 76 91 BRAKE SYSTEM HYDRAULIC POWER 4 WHEEL DISC JG1 88 90 SHAFT PROPELLER ALUMINUM JL6 76 89 BRAKE SYSTEM MANUAL DISC DRUM CAST IRON JL9 B7 92 BRAKE SYSTEM POWER FRONT AND REAR DISC ANTILOCK JM3 88 89 BRAKE BOOSTER DOUBLE DIAPHRAM HI FLOW 240MM JM4 86 87 BRAKE SYSTEM POWER ANTILOCK CAST IRON JM4 88 90 34 6 C BRAKE SYSTEM POWER FRONT DISC REAR DRUM ANTI LOCK CAST IRON JM4 88 90 234 H BRAKE YSTEM POWER FRONT DISC REAR DRUM ANTI LOCK CAST IRON JM5 82 89 BRAKE BOOSTER DOURLE DIAPHRAGM 200MM JM7 76 89 BRAKE BOOSTER SINGLE DIAPHRAGM JM8 76 87 BRAKE SYSTEM POWER ANTILOCK ALUMINUM J1F 89 90 BRAKE SPECIAL EXPORT J41 82 87 BRAKE SYSTEM POWER DISC DRUM CAST IRON J41 88 92 BRAKE SYSTEM POWER FRONT DISCIREAR 0RUM CAST IRON J42 82 87 BRAKE SYSTEM POWER DISC DRUM ALUM NUM J42 88 89 1 B BRAKE SYSTEM DRUM ALUMINUM J42 88 90 12 F BRAKE SYSTEM DRUM ALUMINUM J50 76 92 BRAKE SYSTEM VACUUM POWER J55 76 92 BRAKE SYSTEM HEAVY DUTY POWER J65 76 90 BRAKE SYSTEM POWER FRONT AND REAR DISC KB2 86 87 HEADS ENGINE CYLINDER CAST IRON KBB 82 86 HEAD ALUMINUM KC4 76 87 1234 6 COOLING SYSTEM ENGINE OIL EXC CORVEITE EXPORT KC4 76 87 1 Y COOLING SYSTEM ENGINE OIL KC4 88 89 34 W COOLING SYSTEM ENGINE OIL KC4 88 90 12 F COOLING SYSTEM ENGINE OIL KC4 88 90 1 V COOLING SYSTEM ENGINE OIL KC4 89 89 1 A COOLING SYSTEM ENGINE OIL EXPORT KD1 87 87 COOLING SYSTEM TRANSMISSION OIL EKPORT KD1 88 90 34 W COOLING SYSTEM TRANSMISSION OIL Q 1989 GENERAL MOTORS SERVICE PARTS OPERATIONS OLDSMOBILE 32E REV 6 89 RPO 21