The issue with an S2000 in ITR trim - or really any trim is the course. On Buttonwillow I reckon the S2000 could hang with John Norris if say John Norris was driving it (for example of driver parity)... But on a course like the Interior Road Course at California Speedway, the S2000 would be outclassed lugging out of the slow right angle turns onto the the relatively long straights.

So on courses where the turns allow you to carry speed - Laguna, VIR, etc, the flowing turns would fall into the nature of the car to carry speed. On course Like RA or RA (LOL) or even Blackhawk or Morroso you'd be fighting a losing battle of the drag race.

Or at least that's my feeling on the matter.