The Ford Fusion is a great car to work on because it is easy to modify and fit with aftermarket parts. There are also many companies that manufacture parts specifically for the Ford Fusion, making it easy to choose from a wide selection depending on your personal tastes.
Find wheels that will look nice on your Ford Fusion. Wheels 18 inches in diameter fit perfectly in the Fusion's wheel well, but any wheel size ranging from 17 to 19 inches works.
Lower the Fusion with lowering springs or coilovers. Lowering the car will lower its centre of gravity, making it handle better, and it will fill the wheel gap, giving it more of a sporty feel. Lowering springs provide much more in the way of ride comfort but can't be adjusted, whereas coilovers can be adjusted to your preferable ride height, with the drawback of giving the vehicle an uncomfortable ride.
Install a body kit and spoiler on the Fusion. There are numerous options to choose from. Pick the body kit that works for you and have it installed and painted professionally.
Install an aftermarket stereo system. This will include a CD player, subwoofers, speakers and an amplifier. The stock stereo system on the Fusion is very limited in volume and sound quality. An aftermarket sound system will give you great sound without distortion and buzzing familiar to a stock set-up.
Install different taillights, such as clear or carbon-fibre taillights. This will give your car a whole new look.
Install an aftermarket exhaust system on your Fusion. This will increase the car's performance and make it sound like a thoroughbred race car. There are many options available, such as Magnaflow and Borla.
If you need further help, consult your local performance shop.
When working on the car, make sure to wear safety glasses and proper attire to protect yourself.