sounds like your applying for work experience.
whats your budget? how long do you plan to keep the car? does it necessarily have to be an import? how many doors do you want? early or late model? I'd say a decent r31, ,my mate had one dunno which model exactly. the thing was bulletproof, had a surprisingly decent amount of power (would beat stock s14's), drove and handled very well. would make for a very good first car i say.