1988 BUICK SALES OPTION Z7U OPTION REGAL LIMITED MODEL WN57 W Z7U CHANGES VIN TO WD57 i OPTIONS ZYU REGAL LIMITED BIB FOUR SEATER B5T PACKAGE EXTR APPEAR BLACKOUT B5U PACKAGE EXTR APPEAR GROUND EFFECT B52 PACKAGE EXTR APPEAR RIBBON BF4 CARPET FLR CUST B48 TRIM LUG COMPT DLX B71 MOLDING WHL OPG CUSTOM BLACK B83 MOLDING RKR PNL CO1 ORNAMENT BODY EMBLEM EXTR C75 LAMP INTR FRT HD CTSY DUAL RDG C91 LAMP DOME DB3 SUNSHADE W S W EXTENSION FE1 SUSPENSION SYSTEM SOFT RIDE UT1 BUZZER TONE GEN WRNG Y56 PERFORMANCE PACKAGE 1993 GENERAL MOTORS SERVICE PARTS 0PERATIONS BU CK 45W 14 2 93