Help on air intake systems?

I need help on finding the right air intake for my car. I have a 98 Honda civic LX, it has an "air intake" on it already from the previous owners but it's the illegal one. I don't know if I should get a cold air, a short ram, or just find an original one.
I live in California if that makes a difference.

Since youre in cali Just go get a stock air box for it. You can find them at almost any junk yard for under $50.
Or if you wanna go aftermarket. Then look for an AEM intake. It doesn't matter short ram or cold air. As they will do almost nothing for your car, except give you some engine bay bling and make noise.
For $150 - $200 you'll have a C.A.R.B legal intake system.