For 1990-2009 cars

Application | GM SPO Group Number
--- | ---
Exhaust Manifold Pipe Bracket | 3.616
Exhaust Manifold Pipe Gasket | 3.611
Exhaust Muffler | 3.701
Exhaust Muffler Front Hanger Bracket | 3.704
Exhaust Muffler Rear Hanger Bracket | 3.704
Exhaust Muffler Rear Hanger Insulator | 3.704
Exhaust Pipe Bracket | 3.616
Exhaust Pipe Clamp | 3.708
Exhaust Pipe Hanger Bracket Insulator | 3.616
Exhaust Heat Shield (Resonator) | 3.616
Exhaust Pipe Rear Hanger Bracket | 3.616
Exhaust Pipe Rear Hanger Insulator | 3.616
Exhaust Resonator | 3.702
Exhaust Tail Pipe Hanger Insulator | 3.706
Oxygen Sensor | 3.682
Three Way Catalytic Converter (with Exhaust Manifold Pipe) | 3.685