MIDGET RACE CAR CHASSIS SET UP TECHNOLOGY MANUAL - COVERS: The fundamentals of race car setup and suspension function to make chassis tuning easier A brand new book for both dirt and asphalt midgets. Build Your Own Midget Race Car Knowledge Level. Due to the scratch-built nature of midget cars, you should be knowledgeable in handling, chassis, suspension, powertrain, aerodynamic and safety design. About The Chassis. BOSS Chassis The BOSS Chassis was designed by Austin Brown of KBR Performance and renowned micro, midget and sprint car Crew Chief Flea Ruzic of Millennium Components.