which ones will fit? The deck that I want to get is about half the size of the factory one that came with the car would it fit somehow or do I have to buy one thats similar in size?
use crutchfield.. they rock, and save you $$ on installation, usually have awesome specials, and are great with support. I've bought many many times from them. They have a search for what fits your vehicle so you wont order the wrong thing.
Your factory stereo is probably a double DIN. If you get one half size (DIN), you just need something like a VU meter, or CD pocket to fill the gap. These are usually universal size. Ask for professional help on which would fit your ride.