I have 2 stock r34 gtt op6 turbos.
1. One just came off my car, never had any trouble with it, slight shaft play. Approx 120,000kms on it.
2. Bought the second one for intention to get it highflowed while my 34 was still a daily but never got around to it, no shaft play but compressor fins have a few tiny chips.
Both $300 but open to offers. Pm me if interested.