http://turbowerx.com/page1/page3/page3.html
I have no idea if anyone is producing higher compression engine components... most are just upgrading to 3.4's in the old non-egas 986's.
I'm torn between a 3.4 upgrade or a SC kit or Turbo kit. The 3.4 costs more, but frankly, FI is really hard on an engine and I'd rather not be replacing my engine more than once.