It is a a D.E.W. It was originally made in Kimball, Nebraska in the early 1960's. DEW stood for the owner, Dale E. Wood. It was not a great success. By 1965, the engine was bought by Ray Kesteloot in California and sold under the Kustom name. On the Kustoms, the word DEW was ground off the bypass and replaced with a sticker.There was a .61 R/C version and a .51 stunt version. There may have been more.