The FFR Cobra & Daytona are allowed in TT1 - TT3 (time trial) & ST1 - ST3 (racing) with a slight weight penalty, which sub class depends on the power to weight you are at. I expect the 818 will get classed there as well once a few pave the road.
So don't drive too fast, you guys that are first getting your car done, or the rule makers will stick us in higher classes (STR) or stick us with a bigger weight penalty.