"U/O CHEVEROLET AND GENERAL MOTORS CORP.,TRUCKS AND SCHOOL BUSES; 1980 MEDIUM DUTY TRUCKS; 1980 CONVENTIONAL CABS; V8 .427 CU. INCH ENGINE; V8 .366 AND .454 CU. INCH ENGINES; 1979 V8 .366; .427 AND .454 CU. INCH ENGINES; 1978 V8 .366 CU. INCH ENGINE,MODELS MD,CE,SE AND TE6000 U/O AN MD-1 TRANSMISSION; 1978 CE,ME,TE6500 MODELS; 1976 CE,TE6000 2D PRODUCTION MODELS"