At the main menu, select the "Extras" option, then choose the "Cheats" selection. Enter one of the following codes, and select the checkmark. If you entered the code correctly, a message will appear. Enter the garage in Story mode to equip the unlocked car part.
Enter "z74hsv" as a code to unlock the Butterflies wheels.Hoistein hood ornament
Enter "36mj5v" as a code to unlock the Hoistein hood ornament.Mega Spoiler rear accessory
Enter "k4c2sn" as a code to unlock the Mega Spoiler rear accessory.