1973 THRU 1978 TRUCK SERIES IDENTIFICATION SERIES 100 200 300 CONVENTIONAL MODELS V 2 DOOR 2 DOOR 4 DOOR PICKUP PICKUP PICKUP NOMINAL 2 DOOR FLEETSIDEI STEPSIDEI 4 DOOR FLEETSIDE TON WHEEL CAB CHASSIS wIDE StDE FENDER SIDE CAB CHASSIS WIDESIDE RATING BASE CIO1 03 E63 O3 ES2 6 1 2 FT BOX 6 1 2 FT Box 1 2 M O3 E63 I3 EEZ B FT BOX B FT BOX O3 E63 O3 ESZ 3 4 B FT BOX B FT BOX 43 43 ES3 BONUS CAB B FT BOX BONUS CAB 63 63 E63 B FT BOX 43 AS3 43 AS3 E63 CREW CAB CREW CAB 8 FT BOX U3 4 E63 03 E62 8 FT BOX B FT BOX 7 BONUS CAB 8 FT BOX BONUS DAB 63 S3 4 E63 CREW CAB CREW cAB 8 FT BOX 43 AS3 I3 ASS E63 CREW cAB cnEw cAB B FT BOX IEEE1 Q 31 1Ej IBB O3 E63 03 E62 117 5 6 1 2 FT BOX IM 2 FT BOX K109 03 E63 03 E62 B FT BOX B FT BOX 03 I3 E63 O3 E62 3 4 B FT BOX B FT BOX I K3u9 O3 ES3 1 B FT BOX 43 43 E63 BONUS cAB BONUS cn 43 AS3 43 AS3 E63 CREW CAB CREW CAB B FT B0 X 31 IEE 314 EH 197wa 7977 78 A 197 74 J WAREHOUS NG Ann DISTRIBUTION DIVISION OF GENERAL MOTORS c0RFORATIOn LT TRuc 51 A B REV 2 83