They probably won't cover anything TRD, well any parts associated with any issues. Had an issue with my CAI wiring, it's not TRD, and I asked them as I said it was an exact copy of one, but because it is not standard, and you are modifying the car, it wouldn't matter one bit, TRD or not. But then again, they are Toyota and try to get out of as much as possible. If they fit it though, I think it can be covered, by writing a stat dec or something? (Someone correct me here if they want, I'm not entirely sure on that)