don't bother buying a non turbo skyline.
they are shit.
don't care what anyone says.
you are young, inexperienced, and need a car.
get either a corolla, liberty GX (LX is front wheel drive, gx are 4wd which you can easily get an RS Turbo engine for it later if you wish).
if you must have a skyline, then get an AUS delivered R31.
it's a 3L and has plenty of torque to get you around.
if I was in your shoes, I'd get a twin cam corolla and 3 years later once off your P's, and with all the money you saved on petrol and fines and defects, get a skyline gtst or GTR if you can afford.
NA import skyline = shit