SECTION 6 DESIGNATION: MM/PS - preceded by car number. *BODY: Reserved for 1982 - Current 1/24th or 1/25th scale domestic production coupe or sedans only. All bodies must be of a kit based model or dealer promo only (3D printed bodies prohibited). Body maybe lowered but must retain original door lines and maintain two thirds of the front bumper. Diplanes not allowed. Body may not be chopped. Wheel-Wells may be enlarged to reflect the Pro Stock look not to exceed 1-5/16" on 1/25th scale and 1-1/2" on 1/24th scale. Corvettes or any sport-type 2-seaters (Vipers, "New"T-birds, Etc.) prohibited, Convertibles prohibited. All bodies must resemble 1982 - Current full scale I.H.R.A. or N.H.R.A. Mountain Motor Pro Stock Cars. Must have original front and rear bumpers as delivered by the factory. Rear bumper may be opened for wheelie bar struts not to exceed 1/8" on either side of the struts. Head lights, parking and tail lights must be retained in stock original factory location (but they may be filled and reproduced by decals and/or paint). Any modifications to body deemed questionable by tech committee must be authenticated by visual proof (photo). *INTERIOR: Mandatory, Painted 3D driver. *WINDSHIELD/WINDOWS: Blackout windshield/windows not allowed. Kit Based, Lexan, Clear Styrene permitted. *HOOD SCOOP: Mandatory, Must be Mountain Motor Pro Stock style mounted forward of the drivers compartment. No rear-facing or cowl induction allowed. Must meet minimum dimensions; Height: 3/8", Width: 7/16", Length: 1-1/4". *REAR SPOILER: Pro Stock style spoiler with spill plates mandatory. Styrene or Resin. Must be painted to match paint scheme of car. Maximum length 7/8" 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 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; ball bearings allowed. *FRONT WHEELS/TIRES: Required; Wheel Hub Diameter 5/8 minimum diameter. *REAR WHEELS/TIRES: Wheel Hub Diameter 5/8, Tire Diameter Minimum diameter 1- 1/16" (1.0625"). Minimum tire tread width fully contacting track surface, 1/2" (0.500") 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-eXtreme: Part Number PS-4021, ball bearing permitted. Arms and Magnets will be metered/checked for size and legality. *GUIDE FLAG: One guide flag per car, 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.