As the other guys said mate...you could...it is possible..but i think if your just starting out, get a pig like a KE70, S13, or gtst if you've got your heart set on a GTR. It would be MUCH cheaper and you could spend more on worth while mods such as suspension, 2 way diff etc..
but in the end its your call
EDIT: I see in your info it says you own a sprinter? AE86? Use that.