Also, there are a number of considerations with trying to adapt the FPV gear to your 34... with enough $, you can do it.
off the top of my head, these are some of the things you have to consider
1. will the front rotor offset (how far in or out it is, in relation to the hub) work on the skyline, and is the stud pattern the same? will the wheels clear the rotor and caliper, given this offset
2. will the rear rotor offset work? What will you do with the hand brake assembly? Adapt the FPV one, or run custom rotors and rear hats over the handbrake drum?
3. do I need custom brake lines make up to suit (probably likely)
4. will the caliper configuration work (be possible!) with the skyline front/rear knuckle assemblies? They may not physically fit!
5. what is the cost of custom hats and dogbones? Note that radial mount calipers are MUCH easier to make up brackets for, than lug mount (lug is what the factory brakes are, generally A/market are radial). My recollection of my hats were ~500 front pair, and ~250 for the brackets.
6. brake balance - will the skyline master cylinder be the right size to push the larger or smaller pistons? will i get a pedal with no travel, or lots of dead travel?
that's just a start! I don't want to put you off trying it - i wanted to do this on my 32, as I could get some FPV stuff relatively cheaply - but in the end went with AP CP5555s front and factory 33GTR brembos at rear, with a larger rotor.
The ultimate question is - $7K will get you a bolt on solution from stoptech; you'll probably at the end spend that on the FPV setup. Also, the FPV setup may not work, or be a lot of farking around to get working.
hope that helps...