How ya goin sigsputnik
Go the R33, there a good drive and feel great (just a bit biast). I bought my baby from http://www.powerplayimports.com in sydney, good group of people, don't know if you want to travel that far? there are a few more place's in canberra now that import skylines. Just need to take your time in purchasing a car, need to make the right decisions look around for the right one.
As for servicing or mod's i go to Ming Automotive in fyshwick good, freindly group of people, they know their cars.
Good luck in finding the car you want.
It's good to see more canberran's popping up on the forums