It is a WRX Club run trackday.
As long as you have a trackday license, fill out the forums and pay your cash, all you need.
There is no car type/model restriction.
You will also need to read the supp regs to ensure you car is upto spec.
fire extinguisher, tow/battery markings, bonnet latch (as its just not worth the hassle on the day), and HELMUT, ankle/wrist clothing/closed shoes etc.