Im also a keen on-looker at all the auctions going on in japan. I have a good friend that lives in NAGOYA. The R34 you said that you have seen for 60k AUS, is that landed and complied> Because if it is, I would suggest that you dont buy it, AN "02" model R34 GTR is worth at least 90k for a half decent example in AUS, the better ones more like $120.
It's the same as seeing an R33 GTR here for 35 grand and another for 70K. I would never have paid less than 65k for my car, and to me it was worth every cent. There are differences, esspecially in real life and when you drive them.
I reakon that 60k for a GTR34 would get you a real lemon! Probably accident or repaired cars. I have recently seen good example R34 in japan this week sell for around 4000000 to 5500000yen which is between 80-100K landed.
I would love to be able to get a respectable example r34 for 60k but it wont happen.
Sorry Im bragging on, but I have had friends that have brought in 34's and when they arrived the cars drove like cops, and were clear signs of prior damage though the auction report said grade 4.5. I would hate to see a GTR FAN get ripped that's all.
Good luck with finding your ride though