There’s nothing in your Parts Inbox at the start of the game. However, you can win new parts as you complete daily challenges and other things. You can also “find” parts as you drive around Ventura Bay (see our Collectibles chapter for details). They are found on parked trucks. No matter how you acquire them, these parts appear in your Parts Inbox. Select this option, and then you can either accept them or sell them for cash. The choice is yours. The price you get is what you would pay to purchase them yourself.