They are fantastic. I got the 4 pots with 330mm DBA 4000 series rotors, braded lines and Ferodo DS2500 pads. The rears are still stock but I will get some R33 GTS-t rears to put on once the dint and busted gearbox is sorted out. I had to have the mounting holes in the adaptor brackets re-drilled and taped bigger to take the bolts and cut a notch out of them for clearance to the hubs but apart from that it was a piss easy install.
I guess they made a mistake when making the brackets or maybe the Stagea has different front hubs / steering knuckle to a GTR.
The pedal feels so much better, much easier to modulate and threshold brake and the ABS still works as it should or better, they work well when cold or hot. I noticed a little brake squeal when braking lightly in reverse but that was it. They will probably get even better once bedded in; I only got to do about 100km on them before stuffing my gearbox.