gus, You can get plenty with that budget...

I would look into CDT components for the front in 5 1/4, and a pair of co-axials in the back...the fronts you can run off an amp if budget allows, but depending on model, this isnt a necessity as they are VERY efficient drivers and can be run off the headunit...best sound will be to amp the fronts and run the rears off the headunit

also worth invest in is a bit of sound deadening, you dont have to go mad, but a deadening the outer layer and sealing up as many holes in the door as possible will even make a poor set of speakers sound good!...within reason lol

Forget the screen and put in a good quality headunit and you will have a lovely sounding motor for whats in there!

bassboy