2001 Ford Mustang GT Deluxe 2dr Convertible (4.6L 8cyl 5M)
With just a few tweaks here and there, this car becomes a hybrid muscle car and sports car. Goes FAST, sounds AWESOME, great handling -- like it's superglued to the road. The best part about the tweaks -- e.g. aftermarket exhaust -- is that they don't compromise reliability or fuel economy. The convertible top is very solid and secure when locked up, no flapping or significant noisiness, even on the highway. Top-down, this car is a blast just as well, and the MACH sound system can easily be heard over even a passing semi.
GT performance, convertible, MACH stereo, leather seats, and Laser Red color - yeow!
Functional hood scoop instead of just a pure decoration -- though its mere existence adds much to the look of the car.