Marilyn & The Munster's "Koach" Designed and built by George Barris made from 3 Model T bodies and is 18 feet long. The 133" frame was made by hand. Powered by a 289 Ford Cobra engine from a 1966 Mustang GT with a 4 speed manual transmission & a power rear end. The brass radiator and fenders were hand formed. Jahns high compression pistons, ten chrome plated Stromberg carburators, an Isky cam, and had a set of Bobby Barr racing headers. In 1964, the cost to build the first one was $18,000.00.