[LAP1DOUG]

I have a Boxster S with the 6 speed, and I was thinking about going the other way and converting to the 5 speed for autocross - want to swap?

Actually, the final drive ratio on the 6 speed is ususally a handicap for most autoccross courses. It is numerically quite low, and so you give up some acceleration.

The 6 speed in 2 nd gear does not red line until about 74 MPH which is a rare top speed for autocross. For best acceleration, you would want red line to occur at a more normal 65 MPH or so maximum top speed for autocross.