Unfortunately, a single pass regrade of the SSE probably won’t be so easy: It uses several different sources and most scenes were graded independently, more than once, by more than one person… And then I applied a one size fits all LUT on top of that to get it to where it is now.
Edit: Never mind, I see that’s not what you were suggesting: Use the regraded GOUT as a guide to regrade the SSE.