the r34 gt4 didnt come with a turbo..neither did the r33 one they were both N/A
the only 4wd non gtr skyline that came with a turbo is the r32 gts4.
btw there is a model of the r34 gt known as the gt-v
its exactly the same as a gtt..such as same brakes, suspensions etc etc except it doesnt have rb25det neo it just has the rb25de neo.