A new car and a car about two years old are about as likely as the other to break down. In short, there really isn't a risk with buying a car two or three years old. If I were you I would save the money and buy the SLIGHTLY used car. Besides, before adding a blower (supercharger, huffer, of whatever you want to call it) it would be best to wait until the engine is broken in good so if you go the new route you will need to wait a few months before adding a huffer. Also, if you do add a huffer, a stick may be a better choice of transmissions because auto trannies really don't like that much power being pumped through them.