A vehicle payment plan agreement is a contract between a buyer and seller of a vehicle that agrees to installment payments. This form is used to obtain a Pennsylvania Certificate of Title for vehicles not currently titled in Pennsylvania, or which were repossessed (1.Watch this before you finance your next car (former dealer explains how to read a purchase contract) Cash assistance programs provide temporary financial support to Pennsylvanians with low incomes pay for everyday expenses. Use Allegheny Truck Body's payment calculator to easily estimate and compare monthly payments on your next truck purchase.