I am looking at a 2002 GT mustang. It has 32,000 miles on it and is in excellent shape. They are asking 15,500 for it. Is this a good price? What are the best bang for the buck upgrades I can do to it. And also what is a good after market intake for it. I would want to get rid of the plastic one. What trans. does it have? What would be the best rear gear and what is the factory gear? Thanks for the help!