GMI PRODUCTION OPTIONS RPO FY LY DIVISIONAL RPO DESCRIPTION RPO DESCRIPTION F17 76 88 AXLE FRT 2 84 RATIO W 2 84R F17 F25 76 87 AXLE FRT 3 32 RATIO W 3 32R F25 F29 76 81 AXLE FRT 2 41 RATIO W 2 41R F29 F36 76 81 AXLE FRT 2 19 RATIO W 2 19R F36 F40 76 88 SUSPENSION H D FRT RR W H D SUSP F40 F41 76 88 SUSPENSION SPL H D FRT RR W H D SUSP F41 F42 76 88 SUSPENSION H D ERT W H D SUSP F42 F44 76 81 CHASSIS EOUIPMENT HEAVY DUTY W F44 F45 76 85 AXLE FRT 2 93 RATIO W 2 93R F45 F47 82 86 AXLE FRT 2 73 RATIO W 2 73R F47 F51 76 88 ABSORBER H D SHOCK W H D SHK F51 F57 82 85 AXLE FRT 3 15 RATIO W 3 15R F57 F58 76 87 SHAFT H 0 FRT STAB W H D STAB F58 F59 76 88 STABILIZER FRT W F59 F60 76 88 SPRING H D FRT W H D FRT SPR F60 F61 82 87 SHAFT STAB RR W F61 F62 76 87 AXLE FRT 2 39 RATIO W 2 39R F62 F65 76 B3 SUSPENSION FRONT AIR W AIR SUSP F65 F66 76 88 SUSPENSION H D FRONT AIR W H D AIR SUSP F66 F67 82 86 AXLE FRT 3 19 RATIO W 3 19R F67 F68 82 87 AXLE FRT 3 45 RATIO W 3 45R F68 F71 82 84 SPRING W SHK ABS H D VAR 1 W H D SUSP F71 F72 82 87 SPRING W SHK ABS H D VAR 2 W H D SUSP F72 F75 76 87 AXLE FRT 3 18 RATIO W 3 18R F75 F77 82 85 AXLE FRT 3 73 RATIO W 3 73R F77 F79 82 88 AXLE FRT 2 97 RATIO W 2 97R F79 F85 76 81 SHAFT H D FRT STABILIZER W H D STAB F85 F90 76 81 AXLE FRT 2 73 RATIO W 2 73R F90 GH2 76 87 AXLE RR 2 29 RATIO W 2 29R GH2 GH3 86 88 AXLE RR 2 77 RATIO W 2 77R GH3 GH4 76 81 AXLE RR 2 28 RATIO W 2 28R GH4 GL1 76 81 DIFFERENTIAL CARRIER RR AXLE ALUM W GL1 GM1 87 87 AXLE RR 2 59 RATIO W 2 59R 0M1 GM3 85 88 AXLE RR 3 45 RATIO W 3 45R 0M3 GM7 82 B3 AXLE RR 2 39 RATIO W 2 39R GM7 GM8 76 88 AXLE RR 2 56 RATIO W 2 56R GM8 GN3 76 81 DRIVER CONTROL LEVELING W LVL CONT GN3 GS4 85 86 AXLE RR 3 70 RATIO W 3 7OR GS4 GT4 76 88 AXLE RR 3 73 RATIO W 3 73R GT4 GT5 76 88 AXLE RR 4 10 RATIO W 4 1OR GT5 GT8 76 88 AXLE H D RR 4 10 RATIO W H D 4 1OR GTB GU1 76 87 AXLE RR 2 41 RATIO W 2 41R GU1 GU2 76 88 AXLE RR 2 73 RATIO W 2 73R GU2 GU3 82 85 AXLE RR 2 93 RATIO W 2 93R GU3 GU4 76 88 AXLE RR 3 08 RATIO W 3 08R GU4 GU5 76 B8 AXLE RR 3 23 RATIO W 3 23R GU5 GU6 76 88 AXLE RR 3 42 RATIO W 3 42R GU6 GV4 82 87 AXLE RR 3 36 RATIO W 3 36R GV4 GV8 82 85 AXLE RR 2 72 RATIO W 2 72R GV8 GW4 84 85 AXLE RR 3 31 RATIO W 3 31R GW4 GW6 85 88 AXLE RR 3 27 RATIO W 3 27R GW6 GW9 76 88 AXLE RR 2 93 RATIO W 2 93R GW9 GX3 82 88 AXLE FRT 3 33 RATIO W 3 33R GX3 GX4 76 83 AXLE RR 3 75 RATIO W 3 75R GX4 GX5 76 83 AXLE RR 4 09 RATIO W 4 09R GX5 GY5 76 87 AXLE FRT 3 65 RATIO W 3 65R GY5 G44 85 87 AXLE RR 3 07 RATIO W 3 07R G44 G50 76 88 SPRING H D RR VAR 1 W H D RR SPR G50 G51 76 87 SPRING SPL H D RR VAR 2 W H D RR SPR G51 G52 82 87 SPRING EXTRA CAPACITY RR W H D RR SPR G52 G60 76 88 SPRING AUX W AUX SPR G60 G66 76 88 ABSORBER AIR BOOSTER RR SHK W MAN LVL CONT G66 G67 76 77 ABSORBER AUT0 LVL CONT SHK SYS W A L C G67 G67 78 88 ABSORBER ELEC LVL CONT SHK SYS W ELEC LVL CONT G67 G72 80 80 AXLE RR 2 14 RATIO W 2 14R G72 G72 81 81 AXLE RR 2 14 RATIO EXPORT W 2 14R G72 EXPORT G72 82 87 AXLE RR 2 14 RATIO W 2 14R G72 G75 82 87 AXLE RR 3 62 RATIO W 3 62R G75 G8O 76 88 AXLE RR LOCKING TYPE W 080 G83 82 83 GEAR RING 8 75 IN W 8 75 DIA RNGR G83 G87 76 B7 GEAR RING 8 50 IN W 8 50 DIA RNGR GB7 G88 76 83 GEAR RING 8 875 IN W 8 875 DIA RNGR G88 1 1987 GENERAL MOTORS SERVICE PARTS OPERATIONS PONT AC 21 IB