Go to the Audio Store and ask what models would fit your car. The buy a wiring harness and a car stereo installation kit for your cars year, make, and model. It isn't hard to do once u know what you are doing but it may take a little practice. The wiring harness will plug right into your existing harness that your stock h.u is connected to and if u buy a new radio it will give you the wiring codes for that radio. Just hook up the wires from the cars harness(that u just bought!) to the radio harness by following the directions it will be a fairly simple task. Good luck!!
Live life 2 the full cuz u only live once!