1981 BRAKE SYSTEM USAGE CHART 1981 B ZE JIMMY GASOLINE ENGINE VEHICLE SPECIFICAHONS BRAKE SYSTEM SPECIFICATIONS OPT HW BASE BRAKES DUTY BRAKES MODEL WHEEL REAR BRAKE MERCHAND BRAKE MERCHAND N0 BASE WHEELS RPO RPO RPO RPO C10516 106 5 6000 SINGLE JB5 STD K10516 106 5 6000 SINGLE JB5 STD I 1 GENERAL MOTORS SERVICE PARTS 0PERATIONS LT TRUCK 52A 4 O00 GROUP BRAKE SYSTEM 14 REV 2 87 1