*BODY: Any year (1/24th or 1/25th Scale) scale domestic production hardtop coupe, sedan or truck. El Camino & Ranchero allowed. All bodies must be of a kit based model or dealer promo only. Corvette or any sport-type 2-seaters (Viper, "New"T-bird, Etc.), Convertible, Concept, Vacuum Form Styrene, 3D printed or resin bodies are prohibited. Diplanes not allowed. Must have rear bumper or roll pan, may be opened for wheelie bar clearance only. Head lights, parking, tail lights must be retained in stock original factory location. No modification to body, other than grinding out inside of body to lighten. *INTERIOR: Mandatory, Painted 3D driver. *WINDSHIELD/WINDOWS: Blackout windshield/windows not allowed. Kit Based, Lexan, Clear Styrene permitted. *INDUCTION SYSTEM: OEM hood scoop, Pro Stock style hood scoop, Cowl Induction, Blower with top hat, Injector Stacks, Turbo(s) permitted. Blower or Injectors must be a separate unit & cannot be molded or cast into body. *REAR SPOILER: OEM or Pro Stock style spoiler with spill plates permitted. Styrene or Resin. Maximum length 1" measured from mounting point of body to end of spoiler. Cannot be molded into body. Minimum length 1/4". Must attach to the tail end of rear deck or bed no lower than horizontal. Spill plates cannot measure more than 5/16" tall. Any addition of down force producing attachments not a permanent part of the rear spoiler is prohibited. *CHASSIS: Unlimited; Motor must be mounted in an inline configuration; Bearings allowed. Belly pan prohibited. *FRONT WHEELS/TIRES: Required; Wheel Hub Diameter 5/8 minimum diameter. *REAR WHEELS/TIRES: Wheel Hub Diameter 5/8, 1 1/16" minimum tire diameter by .435" minimum width. Slitting or grooving of tread area of tires prohibited. *WHEELIE BARS/WHEELS: Permitted; Total length cannot exceed 5" from center-line of rear axle to center-line of wheelie wheels. *WEIGHT: 120 grams minimum weight. *MOTOR: ProSlot VR-20: Part Number PS-4020, Bearings permitted. *GUIDE FLAG: One guide flag per car/truck, 1 inch maximum length. Click Here: For Motor Requirements & Specifications. Click Here: For General Regulations. If there is any area of these rules which needs clarification, please contact Club (.400) Technical Director by e-mail at club400@hotmail.com.