1982 GMC G1500 Differential Spool G1500 - GM 8.875 in.Rear - w/ 12 Bolt Cover - 30 Spline - Spartan Locker - Installs into standard open carrier case - Rear guaranteed to replace your current 1982 GMC G1500 Differential Spool G1500 - GM 8.875 in.Rear - w/ 12 Bolt Cover - 30 Spline - Spartan Locker - Installs into standard open carrier case - Rear. 1982 GMC G1500 Differential Spool comes new OEM 1982 GMC G1500 Differential Spool aftermarket new 1982 GMC G1500 Differential Spool of remanufactured 1982 GMC G1500 Differential Spool G1500 - GM 8.875 in.Rear - w/ 12 Bolt Cover - 30 Spline - Spartan Locker - Installs into standard open carrier case - Rear.