For $2k, I'd skip the intake and just go for the tune. If you lower your car, you should also get adjustable upper control arm/bracket along with an adjustable pan hard bar. Lower control arms and relo brackets would be good there too. There are also other things that go with properly lowering a car so that can really eat up a budget fast. I put on new sway bars and Koni shocks for much less. New gears out back is a good bang or the buck but don't spend too much on the labor. Shoot for the $500-600 range installed. One cheap mod that makes a huge difference when you push the car is a new shifter bracket. The factory one is junk and most anything else will be better. Simple to install if you have ramps or stands. Axle backs are good for sound but no real power there.
You also said you want a hood scoop. Are there any other appearance mods you want? Side scoops, quarter louvers, rear louver, spoiler, chin splitter, grille? Any stripes in your future? Wheels / tires are good mods but expensive. Inside, speakers are good. I run the same thing Fabulozzz has up front but haven't found ones to replace in the rear yet. Believe it or not, the stock speakers seem to have more bass than anything I've tried, including those Pioneers. They're not so good on the top end so the new door speakers make a big difference.
Remember, this is a never ending list and these are just the starting points.
