Vibe looks nice! The smoked rear lenses are a nice touch, but with the cops by me, I'm sure I would get a ticket.
I just picked up a K&N intake from a guy on here that used it on his 09 GT. It is the one for a 2009+ Scion XB or Matrix, Air Intake 69-8613TS. I've seen them as cheap as $250 on ebay and other places on the internet.
http://www.knfilters.com/cold_air_intake/scion_xb.aspx" onclick="window.open(this.href);return false;
I haven't installed it yet, as it is my Christmas present and I have to have something under the tree to open.
Don't know about springs, I haven't ventured into that yet, but others have.