Hi Mish,
the one and only previous owner had all the work carried out at Midori; car is an R34 GTR V-Spec II Nur.
You name it, Midori pretty much did it. Full engine overhaul (kept at 2.6), HKS2530's, Midori development suspension (aragosta shocks and eibach prings), Midori brake kit (alcon), rose jointed suspension components, titanium exhaust, etc etc etc, plenty of little things too.
I don't have dyno sheets from the time it was at Midori, but power would have likely been around 350-360awkw's from this setup i would imagine.
Trent @ Chequered Tuning has looked after the tuning ever since, from possibly the first flex-fuel conversion on a GTR to likely the first HKS V-Cam installation being controlled entirely from the existing Link ecu; between Midori and Trent (and big nod to Racepace), the car has been sweet and has been full time E85 for quite a while now (probably about 5 years?)
She's a sweet little engine, which is testament to both Midori's 2.6 build when they did it, and care it's received in Australia since.
Midori has a quite regularly updated blog which is really cool to flick through, lots of interesting stuff (especially if your Japanese is good).