How much would maintenance cost on a 2003 mitsubishi lancer oz rally?

I have to do a budget analysis for my math class and it is asking me how much would maintenance be for a year on your transportation. I am planning on buying a used 2003 mitsubishi lancer oz rally in the future so on average, how much would maintenance cost?|||The Lancer requires Spark Plug replacement every 15,000 miles, an Oil Change every 3,500 miles, a Coolant Flush and Transmission Fluid Flush at 30,000 mile intervals and a Timing Belt at 60,000 miles. Figure out how much those services cost locally and add er' up. |||$1213.69 plus tax per year