I was hoping to do some test work with K-Sport but, unfortunately they didn't have anything suited for a GTR, and probably wont have for some time yet. But we did manage to get some parts that are universal and they seem to be made to a very high quality, and have done the job suficiently well.
K-Sport have done quite a few SXs and GTSs especially for the drift scene. If you're in doubt ask to see their demonstrator - a white R33 GTSt.