Well the rule book arrived today. Here is what is required:

Driver's Helmet & Clothing: All driver's over 125mph MUST wear a driver's suit, gloves & boots to match. Protective underwear is highly recommended. All items must be in a clean & serviceable condition. It is adviseable not to wear synthetic clothing material under the driver's suit. All suits must have an SFI rating tag attatched.

Driver's Suit Requirements:

Grade of suit Type of car
SFI 3.2A/20 Blown cars,over 200mph
SFI 3.2A/15 Blown cars under 200mph
& unblown over 200mph
SFI 3.2A/5 Unblown under 200mph
SFI 3.2A/1 Any unblown car under 150mph
& recommended on all cars
under 125mph.

The following SFI suit requirements apply:
With driver's suit SFI 3.2A/20
Gloves SFI 3.3/15
Boots SFI 3.3/15
Head Sock SFI 3.3

With driver's suit SFI 3.2A/15
Gloves SFI 3.3/15
Boots SFI 3.3/5
Head Sock SFI 3.3

With driver's suit SFI 3.2A/5 & below
Gloves SFI 3.3A/5
Boots SFI 3.3/5

Driver's Helmet: All drivers/riders must wear a full faced helmet with face shield which meets Snell foundation SA95 or M95 or later specs. No openfaced helmets allowed. Helmets must be undamaged & in serviceable condition. Eyeglasses worn under the helmet must be shatterproof.

Head sock meeting SFI 3.3 specs or a helmet skirt must be worn by all drivers over 175mph.

Driver's helmet support (Neck Collar) It is required that a helmet support be used where applicable, i.e. in vehicles where the existing roll bar structure does not provide restriction to lateral head movement less than 4".