Totally agree with above, making it your own with mods.
Performance wise, I dunno I saw this youtube video where in Japan there was a supercharged (and god knows what else) 350z that had coilovers, slicks all stripped out etc etc and it totally destroyed a GTR. The amount of mods you can do is crazy, in its basic form a car is just a shell at the end of the day and you can do whatever to it within reason.