Any 4-cylinder car with a maximum wheel base of 104" and a complete stock, frame and suspension. No bracing anywhere except inside the drivers compartment. Dash, steering and panels must remain stock for that make and model. All insulation under hood must be removed.

1. Stock carburetor / fuel injection system for that make and model. No Turbo Chargers.
   
2. Stock transmission for that make and model.
   
3. Battery must remain under hood.
   
4. Stock unaltered rear end for that make and model.
   
5. Passenger tires only. Wheel and tires must be of like size. Stock wheels only with a maximum width of 5" inside bead to bead. Tire sizes: 13" tires may be no larger than 185-70-13. 14" tires may be no larger than 195-70-14.
   
6. Gas tank: if stock gas tank is ahead of rear axle it may remain in place. If stock gas tank is behind rear axle, it must be replaced with a fuel cell or boat tank (max. of 6.6 gallons). Fuel cell / boat tank must be covered, secured and located in trunk.
   
7. Roll Bars MANDATORY: A FULL 6 POINT roll cage with headrest constructed of mild steel tubing is MANDATORY. Major tubes MUST be 1½ O.D. x .090 wall thickness MINIMUM. The major tubes are all tubes in the six-point cage and the driver's door bars. Driver and passenger openings MUST have three side bars with uprights.
8. Driver's door AND PASSENGER DOOR must be welded or chained shut. Driver side door plates mandatory. (A leaf spring separated and welded to the outside door is allowed, or it's equivalent.)
   
9. Approved aluminum racing seat mandatory. Stock drivers seat must be removed.
   
10. Approved helmets (Snell 95 or better), race type seat belts (4 or 5 point harness minimum), and gloves required. A firesuit is recommended or CARHART type pants and jacket acceptable. Neck brace is recommended.
    
11. Window net is MANDATORY. Fire extinguisher in driver's cockpit is recommended.
    
12. All glass (windshield optional) must be removed, including tail lights, markers, and mirrors. If windshield is removed, put in a windscreen with 3 bars in front of driver, no less than 1" in diameter of tubing and no less than 8" on center. Third brake light must remain intact and operable. To compete, cars must be cleaned out from any loose material, broken glass, etc. A screen behind the windshield is recommended.
    
13. Driver floor pan must be complete. No holes. Exhaust must pass driver's compartment and then exit the car. Car horn must be in working condition.
    
14. All cars are subject to a minimum specification inspection at any time. It is the responsibility of the driver to prepare their car free of defects and in safe racing conditions.

  15.     Car numbers must be at least 24" tall and contrasting in color.