Need help identifying brake

[Kaisen]

Hi all, recently got a Nissan Silvia S14 that has a brake upgrade but I'm not sure what brakes are these. This car has several owners and the previous owner wasn't too sure what these brakes are as well. I need to replace the brake rotors as they are wearing out. Will there be any difference if it's a stock S14 rotor or R33 rotor?

http://i95.photobucket.com/albums/l158/kaisen_89/Brake%20kit/20150130_135636.jpg (http://s95.photobucket.com/user/kaisen_89/media/Brake%20kit/20150130_135636.jpg.html)

[ANDY black s13]

S14/s14a zenki kouki stock cast iron caliper
should be using a stock sized 14 disc

[Kaisen]

Thank you very much!

[ANDY black s13]

Thank you very much!

No worries mate,glad to help :)