id lower, thro on some chrome wheels, carbon fiber hood, a decent kit would go alright, nothing too outrageous simple but different if u get me. Ummm u could go a racing wing, but could look a bit ghey if u went to over the top with it. Dark as legal tinted windows (even with a slight purple tinge to it could look nice).
Just some ideas. New paint would be cool in my opinion but just me, and i know funds are hard, but ur driving a GTR so if your gonna do it do it right from the start??
Mitch