As part of the change, several changes were made to the Lincoln model line. Following the positive feedback of the 1939 Lincoln Continental one-off convertible built for Edsel Ford, the Lincoln Continental was introduced as a Lincoln-Zephyr production model for 1940. For 1941, Lincoln revised its branding; the hyphen was removed from Lincoln-Zephyr, making it a Lincoln. As a replacement for the expensive Model K, an extended-wheelbase Lincoln Custom variant of the Lincoln Zephyr was developed. Following the development of proper tooling, the Lincoln Continental began production on the assembly line, replacing hand-built construction.