Unlike other special Mustangs, the King Cobra was never a distinct trim level. It was simply an option package on the Mustang II. The following equipment was included in the King Cobra option: 302-cu.in. two-barrel carburetor engine, hood scoop with “5.0L” emblem, rear deck spoiler, hood “Snake” decal, black grille, black headlamp bezels and all window trim. The King Cobra could be ordered with a “T-roof convertible” top. The T-roof convertible was first offered in mid 1977 on the Cobra II and regular Mustang IIs.