if you have hicas, and want to keep it, then you should be able to run an r33 gts-t rear cradle too. but i don't think you do as you said you have adjustable toe arms (unless you are running cusco drag rods or something? lol)
only reason i went s14 is because it didn't have hicas. i used r33 half shafts though as my diff with 2 way centre is 5 bolt. all arms are exactly the same (lca, toe, camber and traction)
pm me if you have any questions, it's a simple swap but i'm more than happy to help