Autronic SMC is 1800ish from memory, plus tune would be in the haltech ballpark.
link/vipec is another option, they make a skyline plug in unit, I would take that over a PFC. Factor in a MAP sensor based ECU is saving you money on a Z32 MAF, this 300$ can be used on the ECU, or pocketed.
Any ECU is only as good as the tune, cant blame the nistune for the motor death.