https://youtu.be/MvJyIkn2-sA
You can skip to minute 1:50 where Mark Dickens of GM Performance says that they put the 5th gen diff in the new SS. Visually looking at it, the half shaft flanges appear to be different, also the rear bolt that supports the unit seems longer in the gravedigger unit.
It's clearly possible after watching the video, expensive I'm sure too.