V I I 1L10 001 NOTE 8 1ST DESIGN 1987 HAS ROUND EXTRUDED SIDE W NDOW DEFOGGER NOZZLES NOTE 9 2ND DESIGN 1987 HAS RECTANGULAR FLAT SIDE WINDOW DEFOGGER NOZZLES I V A 1992 GENERAL MOTORS SERVICE PARTS OPERAT ONS CHEVROLET 17L 10 000 GROUP i 10 18 1 I 1 92