4WO8 306 NOTE 9 DEALER MAY HAVE TO DRILL ADDITIONAL STUD HOLES IN FASCIA WHEN USING ON EARLY 1991 VEHICLES RPO DEFINITIONS BC9 ORNAMENTAT ON EXTERIOR HOOD DELETE USED WITH EXTERIOR SPORT PKG Z13 BX1 ORNAMENTAT ON EXTERIOR FRONT END SPEC AL USED WITH SPORT PACKAGE Z13 LHO ENG NE 3 1L 3 1T V6 L27 ENG NE 3 8L SF V6 Z7T BUICK REGAL CUSTOM MERCHAND SING OPTION 4WM19 Z7T 4WB19 4WM57 Z7T 4WB57 13U EXTERIOR COLOR S LVER METALLIC I I L T 1993 GENERAL MOTORS SERVICE PARTS OPERAT ONS BUICK 45W l 2 93 8 61 8 000 GROUP