Take it down to RAC/MC motorsport @ the airport and drive it first, see what you like and what you dont like and go from there (always good to learn the limits of the stock car too).

Personally, I'd be learning how to drive it (fast and safely on a track) before you mod it but its up to you.

If you have to mod it, follow what Tony has done to his, awesome handling mods for an already quick-ass car



-Shane.