I.M.C.A. Modifieds are open-wheeled race cars derived from American compact passenger car designs.  They are economical to build and to race, concentrating on the use of readily available production parts.  I.M.C.A. cars achieve speeds of up to 110 mph, utilizing Dodge, Chevy and Ford V-8 engines, with a maximum displacement of 460 cubic inches producing 300 to 400 horsepower.