Back when I was serious into autocross racing, I took Evolution performance driving school. It was good for the very serious and competitive autocrosser - you'll get lots of seat time. A bit hard on the equipment, though. Usually with autocross, you get time to wait between runs, but with evo, there's virtually no waiting, and the school is all-day.
The only time I've ever experienced a "money shift" (from 2nd to 1st instead of 3rd) was during an evo school. This took out an engine. (From the engine over speeding, the valves floated, resulting in solid lifters having their adjustment shims spat out of the lifter buckets, and the overhead camshaft crashed down, causing lots of broken metal pieces in the process and suddenly stopped engine.) Had to get my race car that I drove to the event flatbedded home. But, such is racing.
I did eventually take home a trophy from SCCA Nationals, which is no small feat, and took me three tries before I got it. I was not in a Boxster but always since they were first introduced, admired how they looked going through the autocross courses... (and fast forwarding to today, I've got one as a daily driver.
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