Okay, who's done it, and what did you need to do? I know the easiest way is to undo the rear crossmember from a Supra and wheel the whole in diff and all, but that isn't feasable when shipping interstate.
I have also been told that the caliper and drum hardware don't hang from universal mounts, so at the least I would need the semitrailing arms
Have those who have done it swapped the brake bias valve? Apparently the Celi has one line that gets divided at the rear crossmember, wheras the Supra one has two lines from the valve.