I think what you're missing is that Ford does not want to compete with itself. Why would they make the 1.0 even close to the ST as far as performance goes? No one would buy the ST. The reality is this car is going to either (a) be competitive in a slower class or (b) take a whole lot of modification to be competitive in a modified class (where the ST will be allowed same amount of modifications and probably still be faster). It could be competitive in a few series/classes : HS and STF in SCCA Auto-x (as mentioned above) and B-Spec for road racing (with Fit's and Mazda2's, et). If you went nuts modifying it, maybe SCCA's SMF but I don't see the point of starting with such a small engine in this class and the super lightweight civics would be hard to beat.