2006 Chevrolet Cobalt SS Supercharged 2dr Coupe (2.0L 4cyl S/C 5M)
This car is the ultimate bang for the buck. Great performance, great gas mileage, great style, and all under 20 grand. I picked mine up new for 19K. Couldn't have found a better choice for points all over the board.
Supercharger, 18" wheels, body kit, colors, factory sub.
Better tires from factory, not such a big wing, better traction control, maybe even RWD or AWD, little more power would be cool too.