Look around on crutchfield to get some ideas and see what fits, but don't order from them. There's so many other sites out there that have equipment for almost 1/2 of what crutchfield charges.

For a head unit I'd look at Pioneer, Alpine, JVC has some good decks. Speakers I'd check out focal, mb quart, infinity, JL. Subs, look at adire audio, JL, Alpine, Infinity. Amps, look at cadence, mtx, jbl, us acoustics...... just a few names to get yo going. Overall I'd say to stay away from sony stuff. The overall quality of their car audio equipment is pretty bad.