I might buy into the whole RB25 with a 1.06 A/R debate, as we have just finished building our project car.
Its got the Full Race TS Manifold, Twin 38mm MVS Tial Wastegates, ATP TS GT3582R T4 Flange, the engine has just been fully rebuilt and is running a CR of 9:1.
The plan is to keep the car on 98 for the street and then run it on E85 for the track and eventually run it on E85 when this comes more available at the pump, after all I drive it every day to work
As far as traction goes, it can get a bit tail happy but that probably has more to do with the way I plant my foot instead of easing the power on a little more gently.
Graphs are on 13psi for 98, and will be turned up to 23 PSI to match the 1.6Bar springs that are currently in the wastegates.
It hasn't seen the track yet, as I'm currently overseas and we had some dramas with the RacePak electronic dash, but as soon as I'm back I will get it on to the track and see how it goes.