| MAKE | MODEL | YEAR(S) | CYL | DESCRIPTION |
| Ford | LTD Midsize | 1984-1986 | 6 | All EFI models with 3.8L engine, Main plus Pre Cat, except California |
| Ford | LTD Midsize | 1984 | 6 | All EEC models with 3.8L engine, Main plus Pre Cat, except California |
| Ford | LTD Midsize | 1985-1986 | 6 | All models with 3.8L engine, except EFI or EEC, Main plus Pre Cat, except California |
| Ford | Mustang (except Mustang II) | 1984-1986 | 6 | All models with 3.8L engine, Main plus Pre Cat, except California |
| Ford | Thunderbird | 1980-1982 | 8 | All models, Main plus Pre Cat, except California |
| Ford | Thunderbird | 1984-1988 | 6 | All models with 3.8L engine, Main plus Pre Cat, except California |
| Ford | Thunderbird | 1986-1988 | 8 | All models with 5.0L engine and 3 converter system, Main plus Pre Cat, except California |
| Lincoln | Continental | 1982 | 6 | All models with 3.8L engine, Main plus Pre Cat, except California |
| Lincoln | Continental | 1985-1987 | 8 | All models with 5.0L engine, except dual exhaust, Main plus Pre Cat, except California |
| Mercury | Capri | 1984-1986 | 6 | All models with 3.8L engine, Main plus Pre Cat, except California |
| Mercury | Cougar | 1980-1982 | 8 | All models , Main plus Pre Cat, except California |
| Mercury | Cougar | 1984-1988 | 6 | All models with 3.8L engine, Main plus Pre Cat, except California |
| Mercury | Cougar | 1986-1988 | 8 | All models with 5.0L engine with 3-converter system, Main plus Pre Cat, except California |
| Mercury | Marquis Midsize | 1984 | 6 | All EEC models with 3.8L engine, Main plus Pre Cat, except California |
| Mercury | Marquis Midsize | 1984-1986 | 6 | All EFI models with 3.8L engine, Main plus Pre Cat, except California |
| Mercury | Marquis Midsize | 1985-1986 | 6 | All models with 3.8L engine, except EFI or EEC, Main plus Pre Cat, except California |
