Stock turbo, basic setup, just do a megan test pipe and magnaflow catback w/ modified 3" inlet:

http://www.maperformance.com/magnafl...n-x-16823.html
(note the 3" option at the bottom)

Then eventually do an o2-elim downpipe. I love my MAP o2 elim downpipe! The AMS or Rexpeed are also nice.