I have an 06 Silverado which needs new brakes. The truck spent most of its life life up north and has significant rust issues. The fellow who inspected the brakes says the brake lines and other parts are so rusted they may break or be damaged when removing them. He suggested I replace "everything." I don't know what he means by "everything." Can you who live where rust is an issue help me out? I'd like to know what rust damaged brake parts typically should be replaced. Thanks!