i did this mod on my 4stud r32
got r33 turbo rear hubs and r32 front hubs, came with brake calipers, rotors and handbrake cables still attached
i found my driveshaft spline was the same and fit the turbo hubs
u need a big socket to undo the driveshaft nut from the hub, think its a 36mm socket
i upgraded my brakes at the same time and found that once i went for the first drive i had no braking pressure, adjusted the brake pedal where it connects to the brake master and i got brake pressure,
if u do upgrade the brakes i ur brake lines may have banjo fittings where they bolt to the caliper so you'll have to work something out