Why don't they just refer you to the SCCA B-stock results for the past few years?

The Boxster S is in A-Stock class.

The Boxster and the S2000 are in B-Stock class. In 2003 the S2000 took most of the top 10 positions with the best Boxster in fourth.

In 2004, the S2000 took all of the top 16 places at the National in Topeka.

Doesn't that say it all?