[EcoDave]

CXracing sells an intake for our car, just $100.
cxracing.com: 2.75" Intake Pipe Kit + Filter For 2010+ GM Chevy Cruze 1.4T Turbo
(Edit: My mistake, I don't think this is compatible with your 1.8)


Don't bother with 6x9's.. Take a look over here:

1.) http://www.cruzetalk.com/forum/137-audio-electrical/6056-car-audio-sq-how-thread.html

2.) http://www.cruzetalk.com/forum/36-audio-electronics/11204-sq-car-audio-thread-v2.html