Financial Model

I need a financial model for a fleet manager who is buying vehicles. Basically, the value of the vehicles are $8,500.00 (eight thousand five hundred dollars only). The fleet manager will pay 20% upfront to the bank and then pay the sum of about $220 monthly for 3 years. In addition, an agency called Taxi Ways will provide a 40% partial guarantee in case of a default. In addition, if there is a default from the fleet manager, the car will be repossessed, refurbished and sold at 60% - 70% of the value to repay the loan.