Don't forget... the definition of "rice" is when you put stuff on your car to make it look fast, without actually making your car faster. If you want to run wings and stuff like that... make sure your car is fast 1st. A bone stock, automatic 2.5RS with that wing, altezzas, and an intake.... is rice.
Here's the right order for mods IMO: rims/tires, brakes, suspension, power, looks.
Tires are bar-none the most important mod you can do to your car, every aspect of performance (acceleration, braking, cornering) have to translate throght the tires to the road. Now, make the car capable at stopping, since that will get you out of trouble once the car starts getting faster. Then focus on the suspension, since that keeps you out of trouble to begin with. Now you can start to add power, because by now you should have a safe, controllable car that you know how to drive at the limit. Once the car's fast, then make it look cool... chances are you'll be so addicted to making the car perform better that you'll feel like bodykits / parts are just a waste of money that take away from the car's performance.
On my car here's what I did:
Tires: I started w/ 18's and mediocre tires... I was a retard. They got sold. 17x7.5's are the way to go... with a good set of summer rubber.
Brakes: did steel lines, fluid and pads... WRX brakes are actually pretty decent w/ just those mods.
Suspension: swaybars and endlinks... they really cut down on roll and reduced the natural AWD push.
Engine: Vishnu Stage 0, about 250hp...
More Suspension: ALK, strut tower braces
Better tires: TIRES, TIRES, TIRES!
More power: Vishnu Stage 1... about 290hp... the car is pretty fast now
Looks: so the car's pretty fast now, so I added a few subtle STi body parts... and a not-so-subtle wing.
More suspension: Went to coilovers.
More brakes: I think I need more brakes now... the car's really fast, I can fade my brakes on the track... I can probably get away with just better pads, but I want the better feel of bigger brakes... but I'm still not sure what I'm doing.