Ive looked into Cams for a 33 GTS and the best option is to go with these http://www.nengun.com/tomei/pon-camshafts
They will keep the VCT enabled and you can use them in a rb25det if you wish to in the future. Also get an adjustable camgear for the exhaust side (as intake is already has VCT) for better tuning/use. Buy that from nengun and its $1088.86 of the camshafts and gear. Then you want a tune.. you will want to buy a z32 ecu and put a nistune chip in it that will set you back about another $1000.
A different option ive been told is to get some rb26 cam shafts and get them machined to your application, in doing this you loose the VCT tho.
I was about to buy all this, was just 1 click away from it being all ordered but decided screw it and bought a brake upgrade (get me on the track quicker/safer), 5 stud all round, r33 turbo calipers, new master cylinder,slotted rotors, stainless steel brake lines some street/track pads and an Apexi AFC Neo for some fun.