When you begin your career chose a Peugeot 206 or a civic. Install ECU, Engines and suspension. Win the races till you unlock Celica, spend all your money on it and win about 6 outruns. This should get you unique performance and rims. Chose engines 4 acceleration and rims of your choice. Make your ride look and fast. install all the latest parts and even install a unique suspension to max your handling, when you install all level 3 packages, you should maxed your speed, acceleration and handling.