I believe the Crossfire was created to compete with just the Audi TT alone that's why in Europe they brand it as the " TTbeater "

Other than that DC will have to reduce the wheel size, use an aluminum rear wing, lighter doors and remove the engine cover to make the car lighter and faster and get a 0-60 at 5 sec. just like the Lotus 190HP Elise. However, crash test will be negative but who really cares about crash test anyway when your car is faster than the rest?