Two things are needed for most successful vehicle sales or transfers: proof of sale and proof of ownership. Edit, sign, and share vehicle swap agreement sample online.No need to install software, just go to DocHub, and sign up instantly and for free. The car exchange agreement is structured similarly to a typical purchase and sale agreement. Instructions. The new owner's social security number, taxpayer identification number (TIN), or federal employer identification number (EIN) is required. You'll need to complete Form MV-82 and provide proof of identity, proof of vehicle ownership and proof of sales tax payment. Get a bill of sale in New York to be used for any vehicle, horse or general bill of sale record. Forms. A dealer is not required to title in the dealership's name if you sell or trade-in your vehicle to a licensed motor vehicle dealer. If a private party seller refuses to cancel the contract within 30 days of the sale, consult with an attorney to determine your best course of action. In the state, the motor vehicle BOS form filled is tagged MV-912, and it is recognized as the record or a proper receipt issued when selling or buying a car.