The current TT, no. 60 has cars provided, and are driven completely stock, like in the Arcade Time Trials.
The current DT, no. 60 has one that has the car provided and one that is open and not tuning restricted.
So I don't really know what you're referring to.
EDIT: I see you mean the post in the News Section. That is incorrect about the tuning, but correct about the Spa Francorchamps Drift Trial being open car and not tuning prohibited.