The seller must complete all applicable information and sign this form. The Bill of Sale or Even-Trade Bill of Sale must be notarized.Motor Vehicle, Mobile Home, Off- Highway or Vessel Description. Year. Bill of Sale or Even-Trade Bill of Sale. Learn about bill of sale requirements for the state of Missouri. Includes free Missouri bill of sale templates for cars, trucks, boats, firearms, and more. A motor vehicle bill of sale is between a buyer and a seller of a car, truck, or motorcycle. It is signed as the last step in the sales process. Seeking a Missouri bill of sale? We provide a free fillable template with in-depth guidelines and a document maker for customized forms.