The best way to upgrade you car would be to install the Volkswagen Corrado side skirts. These are basically strips of carbon fiber, plastic or fibreglass that usually tends to match with the default body stripes of your Volkswagen Corrado and their attachment and fixing is quite simple and easy and enables to use together with rear or front bumpers. If you want to make your car to be looked closer to ground, you can attach the Volkswagen Corrado side skirts to the sides of your car.