In the 1966 model year, the four-door (pillared) sedan was replaced by a four-door (pillarless) hardtop sedan. The convertible, hardtop coupe, and two-door sedan continued to be available. The 1966 two-door Skylark was available with the optional "Wildcat 375", 340 ci engine which produced 260 hp (194 kW) and 365 lb·ft (495 N·m). torque with a 4-barrel Carter carb.
Source: Wikipedia, 2012