The best choice to improve you car would be to fix the Infiniti Fx45 side skirts. If you want to modify your car so that it looks r too closer to the ground, you can fix these Infiniti Fx45 side skirts to the sides of your car. These are in commonly the strips of carbon fibre, plastic or fibreglass that are usually tending to match with the default body stripes of your Infiniti Fx45 and their attachment and fixing can be done in an blink of an and also enables you to use mutually with rear or front bumpers.