Your bro is lucky is lucky your dad just simply doesnt whoop his @$$, and take his current car. Do something bad, you deserve to get punished, do something good you deserve to get rewarded.
Anywhoo, A new skyline GTR-34 from motorex will run you about 95k +5K shipping + some other fees. VSPECII slightly more. (this does not include left hand drive conversion (if you into that type of thing)