GRM PRODUCTION OPTIONS RPO FY LY USE DIV MODEL DIVISIONAL RPO DESCRIPTION 1SV 87 87 2 F SPECIAL VEHICLE COMPONENTS OF FORMULA W66 1SV 87 87 1 F SPECIAL VEHICLE COMPONENTS OF LT B4E 245 88 88 1 Y ROOF COLOR REMOVEABLE PANEL BLUE 5F7 88 91 MARKING U S AIR FORCE RED ON REFLECTIVE WHITE 7Y4 88 91 METER ENGINE HOUR T 721 88 91 HORN DUAL HIGH NOTE IN ADDITION TO PRODUCTION LOW NOTE 9W1 88 91 SHOCK ABSORBERS FRT RR HD EXTRA COOLING 1 i 1989 GENERAL MOTORS SERVICE PARTS 0PEnATn0Ns 0L sM0BnLE 3zJ REV 4 89 RPO 63 n 4