Why not just get a R32 GTS or R32 GTS-t, even better, plus the cheapest R34 i've seen in Australia was a R34 25GT Semi Automatic Sedan for $19,990. Goodluck having $20,000 if your a 'youngin' insurance is a killer, so is attention.
Edit: Also you must factor in things like fuel, (i know N/A wont suck the fuel as much as a Turbocharged motor, but still) and repair costs etc, many, many things in a car car not function correctly and need repair, repairs for a car, especially a R34 can be very costly.