You mean the whiteline KCA349 Rear Subframe Align and lock kit.
this kit has several different height rings and mixing/matching these can give the desired result of standard bushes, all round performance, maximum traction and drift, this kit however only come available for the s13-14, r32-33 and 300zx.
i am sure whiteline would make a similar kit, and as ghostrider said he got some custom made, and they are the same rear end(s)