I reckon there could be some adjustments to the track trophies - there could be a large potential middle ground missing given what MIGHT come to this event in terms of out-right race cars.
The TimeAttack series in QLD had a pretty easy to follow system that meant people with registered street cars on R Comps weren't competing with Superlap type cars.
Those rules were:
Street Class
The Tyres must be DOT and ADR approved.
All OEM Tyres (This includes the factory RE070 supplied by Subaru for the STI’s)
The tyre tread wear rating must be 140 or above.
The exhaust must be rear exiting with no screamer pipes.
The car must be road registered.
Must have OEM glass.
Must have OEM doors.
Must have OEM full dash.
Must have all seats in the vehicle. (aftermarket seats allowed)
Must have full interior in the car. Not allowed to be stripped out.
Must not have in cabin adjustable brake bias or pedal box.
Must not have in cabin adjustable brake bias or pedal box.
Stock R35 GTR will run in Performance Class.
Performance Class
The Tyres must have a tread wear rating of 70 or above.
This excludes all slicks with two grooves such as Hoosier, Kumho V710 etc.
The exhaust must be rear exiting with screamer pipes allowed.
The car must be road registerable (streetable car that could be registered).
Must have OEM glass.
Must have OEM doors.
Must have both front seats (aftermarket seats allowed)
Must have dash in place. Aftermarket instruments allowed.
Must have basic interior in the front half of the cabin (removal of carpet, stereo etc and liner allowed)
Must not have in cabin adjustable brake bias or pedal box.
Race Class
This is the almost no restrictions class. Outright race.
No NOS.
*Approved Tyre lists to be supplied for Street and Performance Classes.