Unless these rules state you can do it, then you CANNOT DO IT.

Segto Meeting Procedure

Conduct and Behaviour

Clothing and Crash Helmets

Racing Classes

Fuel

Fire Extinguishers

Construction of Racecars         Electrical Items and Systems
Examples of Front Panel End Design Exhaust Systems
Engine Sealing Racing Numbers
Glass, Windows, and Mirrors Seats and Seat Belts
Roll Cages and Space Frames Wheels, Tyres and Brakes
Technical Specification for Junior Race cars Technical Specification for Prod B Race cars
Technical Specification for Prod A Race cars Technical Specification for Hot Rod 1450 Race cars
Technical Specification for Mod C Race cars  

Technical Specification for SUPER SALOON Race cars

Technical Specification for SPECIALS