You will go a long way with saving money if you do the work yourself, which usually requires the right tools.
Instead of buying a Short Ram air intake I built my own Cold Air Intake (CAI).
I have a 1999 model with a MAP sensor,
if your car has a MAF sensor then you will have to follow another guide/procedure for making a custom intake. And don't rush into any modding. Have a plan laid out.
Search the forum a bit more and you will find numerous guides of people putting on CAIs, Exhaust, Suspension, Exterior etc...
Took out the stock air box and the resonator box(located inside the fender).
Cut a bigger hole in the metal for the CAI to fit.
Connected 2 pipes together to a K&N cone filter from AutoZone($50 lasts lifetime). Messed around until I got the angles right so that there's enough space for the battery to fit in.
Made sure everything was holding tight and in the right place. Then bored a small hole to connect the Intake Temp. Sensor. You can use the grommet from the stock air box to fit the sensor in. And connected the fuel evap line (whatever it is) through another hole. Took a little bit of customizing.
The filter sits in the fender and sucks in Cold Air.
And "Voila"!!!