I BDO4 007 I RPO DEFINITIONS JM4 BRAKE SYSTEM POWER FRONT D SC REAR DRUM ANT I LOCK CAST IRON LV2 ENG NE 307 C D 307Y V8 LO5 ENGINE 5 7L 5 7 7 V8 D GITAL FUEL INJECTION VCU EQUIPMENT COACHBU LDER NOT TO EXCEED 7200 LBS a l T 1992 GENERAL MOTORS SERVICE PARTS OPER ATIONS CAD LLAC 62D T t I 4 000 GROUP 4 74 11 92