ARE YOU KIDDING?!
Had the S197 been equipt with the IRS it would be that much better. I've driven an 07 MGT, put a few thousand miles on it, and I say with 100% certainty the S197 SRA is inferior to my 04 Cobra's IRS in every day driving. Which, BTW, 99% of Mustangs drive on regular roads 99% of the time.
You must be a drag racer to so blindly defend such an antiquated technology.