Would there be any suspicion in there that they have made the regs rubbery so as to change them at will as needed.
Like this...
"
2) The event is designed for entry by performance and high performance vehicles. There will be 2 classes each with sub classes of fastest FWD, RWD and 4WD vehiclesa) Pro class- for both street registered and none street registered cars. Engines and gearbox's are free. Suspension pick up points must be in as per the manufactures design. Slicks are not permitted.
b) Street Class- for street registered cars only. The vehicle must retain the original engine and gearbox configuration. Suspension pick up points must be in as per the manufactures design. Street legal tyres are only permitted.
"
and
"
4) Vehicles used must be driven by the owner of that vehicle or a person duly authorised by the owner, at the discretion of the promoter
"
All of this aside, going to mad seeing the variety beat around.