I would say the short throw shifter is about the only thing I would do after much mulling over. In order to get more power the law of abominable diminishing returns is applicable. You have to spend oodles of money to knock off a second and to me it is really a complete waste of money. Again concurring with was said before in this thread the Boxster S engine at least does not lend itself for modifications. Drive it the way it is a because it is a throughly enjoyable machine like no other in the world.