Permitted modifications supported by documented evidence.

6cyl 1991cc Bore 80mm Stroke 66mm

Points and condenser

Solex 40PI. Weber/PMO 40 or 46 IDA.

5 speed all synchromesh. Limited Slip Differential.

Discs all round

Front. 282mm Solid or Vented. 2 Piston Calliper.

Rear: 285mm Solid or Vented. 2 Piston Caliper

Master Cylinders.

Single outlet master cylinders may be replaced by a Tandem or Twin cylinder arrangement.

The fitting of a dual master cylinder or any other type of device providing a simultaneous action on all four wheels and divided action on two wheels is permitted, providing the original brake pedal and pivot point are used.

The remote brake bias adjuster must be positioned so that it cannot be adjusted by either the driver or co-driver when normally seated in the car.


Front. Telescopic strut assembly.

Rear. Telescopic shock absorbers. Adjustable rear spring plates are not allowed.

Wheels and Tyres.
15inch  rim size. Steel or Alloy.

Wheel  rim, Tyre size & profiles as per MSA Blue Book.


Fibre glass bonnet/boot lid.
Composite side windows.
Alloy centrally mounted replacement petrol tank or
FT3 FIA Safety fuel cell

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