| 1978 | Buick | Regal | Base, Limited, Sport | 3.2L V6, 3.8L V6, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1979 | Buick | Regal | Base, Limited, Sport | 3.2L V6, 3.8L V6, 4.9L V8, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1980 | Buick | Regal | Base, Limited, Sport | 3.8L V6, 4.3L V8, 4.9L V8, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1981 | Buick | Regal | Base, Limited, Sport | 3.8L V6, 4.3L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1982 | Buick | Regal | Base, Estate Wagon, Limited, Limited Turbo, Sport | 3.8L V6, 4.1L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1983 | Buick | Regal | Base, Estate Wagon, Limited, T-Type | 3.8L V6, 4.1L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1984 | Buick | Regal | Base, Grand National, Limited, T-Type | 3.8L V6, 4.1L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1985 | Buick | Regal | Base, Grand National, Limited, T-Type | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1986 | Buick | Regal | Base, Grand National, Limited, T-Type | 3.8L V6, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1987 | Buick | Regal | Base, GNX, Grand National, Limited | 3.8L V6, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1978 | Chevrolet | El Camino | Base, Conquista, SS | 3.3L V6, 3.8L V6, 5.0L V8, 5.7L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1979 | Chevrolet | El Camino | Base, Royal Knight, SS | 3.3L V6, 3.8L V6, 4.4L V8, 5.0L V8, 5.7L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1980 | Chevrolet | El Camino | Base, Royal Knight, SS | 3.8L V6, 4.4L V8, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1981 | Chevrolet | El Camino | Base, Conquista, Royal Knight, SS | 3.8L V6, 4.4L V8, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1982 | Chevrolet | El Camino | Base, Conquista, SS | 3.8L V6, 4.4L V8, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1983 - 1984 | Chevrolet | El Camino | Base, Conquista, SS | 3.8L V6, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1985 - 1986 | Chevrolet | El Camino | Base, Conquista, SS | 4.3L V6, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1987 | Chevrolet | El Camino | Base, SS | 4.3L V6, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1978 | Chevrolet | Malibu | Base, Classic, Classic Estate, Classic Landau | 3.3L V6, 3.8L V6, 5.0L V8, 5.7L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1979 | Chevrolet | Malibu | Base, Classic, Classic Estate, Classic Landau, Classic Sport, Estate, Landau, Police, Sport | 3.3L V6, 3.8L V6, 4.4L V8, 5.0L V8, 5.7L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1980 | Chevrolet | Malibu | Base, Classic, Classic Estate, Classic Landau, Classic Sport, Estate, Sport | 3.8L V6, 4.4L V8, 5.0L V8, 5.7L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1981 | Chevrolet | Malibu | Base, Classic, Classic Landau | 3.8L V6, 4.4L V8, 5.0L V8, 5.7L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1982 | Chevrolet | Malibu | Classic | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1983 | Chevrolet | Malibu | Classic | 3.8L V6, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1978 | Chevrolet | Monte Carlo | Landau, Sport | 3.3L V6, 3.8L V6, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1979 | Chevrolet | Monte Carlo | Base, Landau | 3.3L V6, 3.8L V6, 4.4L V8, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1980 | Chevrolet | Monte Carlo | Landau, Sport | 3.8L V6, 4.4L V8, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1981 | Chevrolet | Monte Carlo | Base, Landau | 3.8L V6, 4.4L V8, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1982 | Chevrolet | Monte Carlo | Base | 3.8L V6, 4.4L V8, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1983 | Chevrolet | Monte Carlo | Base, CL, SS | 3.8L V6, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1984 | Chevrolet | Monte Carlo | Base, SS | 3.8L V6, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1985 | Chevrolet | Monte Carlo | Base, SS | 4.3L V6, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1986 - 1988 | Chevrolet | Monte Carlo | Base, LS, SS | 4.3L V6, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1978 - 1980 | GMC | Caballero | Base, Diablo, Laredo | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1981 | GMC | Caballero | Amarillo, Base, Conquista, Diablo, Royal Knight | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1982 - 1984 | GMC | Caballero | Amarillo, Base, Diablo | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1985 - 1986 | GMC | Caballero | Amarillo, Base, Diablo | 4.3L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1987 | GMC | Caballero | Base, Diablo | 4.3L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1982 - 1983 | Oldsmobile | Custom Cruiser | Base | 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1980 | Oldsmobile | Cutlass | Base | 3.8L V6, 4.3L V8, 5.0L V8, 5.7L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1979 | Oldsmobile | Cutlass Salon | 442, Hurst | 5.7L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1985 | Oldsmobile | Cutlass Salon | 442 | 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1986 | Oldsmobile | Cutlass Salon | 442, Base | 3.8L V6, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1987 | Oldsmobile | Cutlass Salon | Base | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1978 - 1980 | Oldsmobile | Cutlass Supreme | Base, Brougham | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1981 | Oldsmobile | Cutlass Supreme | Base, Brougham, LS | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1982 | Oldsmobile | Cutlass Supreme | Base, Brougham | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1983 | Oldsmobile | Cutlass Supreme | Base, Brougham | 3.8L V6, 5.0L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1984 | Oldsmobile | Cutlass Supreme | Base, Brougham | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1985 | Oldsmobile | Cutlass Supreme | Base, Brougham, LS | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1986 | Oldsmobile | Cutlass Supreme | Base, Brougham | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1987 | Oldsmobile | Cutlass Supreme | 442, Base, Brougham | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1982 - 1983 | Pontiac | Bonneville | Base, Brougham | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1984 - 1986 | Pontiac | Bonneville | Base, Brougham, LE | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1978 - 1980 | Pontiac | Grand Prix | Base, LJ, SJ | 3.8L V6, 4.9L V8 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1981 - 1983 | Pontiac | Grand Prix | Base, Brougham, LJ | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |
| 1984 - 1987 | Pontiac | Grand Prix | Base, Brougham, LE | 3.8L V6 | 2.50 Inch, Dual Out Rear, Use Offset Inlet / Offset Outlet Mufflers Only |