As Rob said earlier, r32/r33 gtr brembos will bolt straight up, they don't need an adapter as they are meant to go with a 324mm rotor. R34 gtr (& Z33) will also fit ok but use a 14mm bolt so you need to make the holes in your hubs bigger as ours are 12mm. R34 gtt calipers will also fit fine (same deal, drill holes to 14mm) they use a 310mm rotor. Not as big as the gtr option but about a third the price. This is what I run, pretty sure some in forum for sale section at the moment. Otherwise huge amount of adaptors available now to fit cts-v brembos, evo brembos, porsche/audi/vw brembos, etc. Generally using z34 355mm rotors. Google is your friend here, lots of info.
