that sounds about right dave.
standard RB25DET should make around 120-130rwkw (from factory 189kw at flywheel with approx 60kw drivetrain loss with rear wheel drive)
RB25DET neo should be about 10-15kw more from factory.
so allowing some variation between dyno's, some variation for age, wear and tear, temperature, fuels etc you should come out around that sort of number at the rears.