for you, without a track near by you ll never be able to use the full potential of the GTR. then again, that goes for all sports cars.
slow? compared to a F1 car but value for money, one of the fastest cars around. stock R34s will go past 320kph.
huge power figures aren't going to happen as easily with such a small capacity. with 1/4 miles, 4wd will be slowing it down. for a drag car, i would look at something else, IMO.
however, with that being said, basic tuning will see a vast increase in power over stock. stock cars were heavily under-tuned. the strength of GTRs is the amounts of grip available.
pros:
-grip and track potential
-high response engine
-good power gains from stock
cons:
-huge power expensive
-requires a lot of work for serious drag racing.
-heavy
stock figures:
206kw engine.
0-100 ~5seconds
1/4mile to memory in the 12s but cant be certain.
though, im sure you ll get a better response from someone who actually owns one