1973 thru 1978 TRUCK SERIES IDENTIFICATION SERIES 100 200 300 CONVENTIONAL MODELS nik viii ii i iiIi v Fi 1 2 DOOR 2 DOOR 4 DOOR PICKUP PICKUP PICKUP NOMINAL 2 DOOR FLEETSIOE STEPSIDE 4 DOOR FLEETSIDIE TON WHEEL SERIES CAB CHASSIS WIDE SIDE FENDER SIDE CAB CHASSIS WIDE SIDE RATING BASE 6107 U3 03 E63 O3 E62 117 5 6 1 2 FT BOX 6 1 2 FT BOX 1 2 C109 O3 03 E63 03 E62 131 5 8 FT BOX 8 FT BOX C209 03 U3 E63 O3 E62 3 4 131 5 8 FT BOX 8 FT BOX 43 43 E63 164 5 BONUS CAB 8 FT BOX BONUS CAB 63 63 4 ess 154 5 8 FT BOX 43 AS3 43 AS3 E63 164 5 CREW CAB CREW CAB 8 FT BOX C309 O3 03 E63 03 E62 1 131 5 8 FT BOX 8 FT BOX 43 43 E63 164 5 BONUS CAB 8 FT BOX BONUS CAB 63 63 E63 164 5 CREW CAB CREW CAB 8 FT BOX 43 AS3 43 AS3 E63 164 5 CREW CAB CREW CAB 8 FT BOX C310 O3 135 5 cam O3 159 5 K1 7 03 03 E63 O3 E62 117 5 6 1 2 FT BOX 6 1 2 FT BOX 1 2 K 109 03 U3 E63 U3 E62 131 5 8 FT BOX 8 FT BOX K209 03 03 E63 U3 E62 3 4 131 5 8 FT BOX 8 FT BOX K3U9 03 O3 E63 I 1 131 5 8 EKEIBQ 2 2 t I 43 43 E63 164 5 BONUS CAB Bonus CAB I A 43 AS3 43 AS3 E63 164 5 CREW CAB CREW CAB 8 FT BOX K 310 U3 135 5 1 s14 us 159 5 1975 1978 1978 WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION 89 551