From 1925 to 1933 Willys-Overland produced their Great Six with a Knight-licensed sleeve valve engine. These were produced in five distinct series names Model 66, Model 66A, Model 66B, Model 66D and Model 66E.
In 1929 Wills offered a Plaidside paint scheme with bodywork by Griswold of Detroit.
1930 Willys-Knight Great Six Plaid-Side Roadster – sold for $220,000 Unique Plaid-Side Design. Beautifully and Extensively Restored. Shown at the Pebble Beach and Meadow Brook Concours. Multiple CCCA and AACA Award Winner. An Eye-Catching and Stylish Favorite of the 1930s. Auction Source: The Amelia Island Auction 2012 by Gooding & Company