I can furnish you with the footage, certainly.
I’d like to think ROTJ could be out in time for a pre-IX viewing, but it’ll depend on a color corrected source becoming available, Adywan most likely.
If you did want to tackle this, I can send you all the relevant shots from both versions, take the results, and sync Hairy Hen’s, the 1997 SE, and the BluRay audio to it in order to hand off a finished sequence ready for use by whomever.