With a 1000 dollars you could set it on a nice set of 18 inch wheels. ANd depending on the color of your car. black wheels or whatever your personal preference may be. Or you could put a brand new pioneer premier system in it. Which is what i just did on my 1995 camaro.
Beyond your buget. I would set your car on 20 inch chrome wheels. thatd be about 1k right there.
Have it Painted gloss black with a light metallic flake. 400-500 dollars
and then put the awsome system in it. which would be about 600 dollars.