For one of our cars (our track car not our autocross car), I'm thinking of adding a diffuser, I was wondering where that would put me if we ever wanted to autocross the car.
The car is a 2012 MINI JCW, so might fit in DS, STX or DSP.
I assume that would put me out of stock.
So I looked at the ST rules. 14.2F mentions "spoilers, splitters, rear wings", but no mention of diffusers. The diffuser is "a production part which is standard or optional equipment of a US model of the vehicle." The diffuser I'm looking at is standard on the GP special edition which is just hitting the streets.
In DSP it might be legal as a backdate/update if the GP were listed as eligible for DSP.
Other than that it would seem to be SMF. Seems a long way to move a car just because of a little modification, though I notice SMF has a better PAX than DSP.
Am I missing anything?