If there are competitors out there who want to run GT cars on IRC events, I don't have a huge problem with it, as long as they're not going to prove fast enough to feature prominently on the leader board. If you have five GT cars consistently fighting for the overall win, then that would surely undermine the whole series. When KSO, the FIA and manufactures got together to thrash out the S2000 regulations, it was agreed that costs shouldn't be allowed to spiral out of control. Using GT cars to go rallying would surely prove hugely expensive. I suspect the spares bills alone would be horrendous.