I know very little on 3D Star Wars, but there is a section on the 3D films and also a completed fan project (but nobody has access to it?) in https://originaltrilogy.com/topic/An-Index-Help-Thread-for-Original-Trilogy-Discussion/id/57363 : in the “The Home Releases and Formats of the Original Trilogy”. Maybe there is something in there that may help you?
Also from the “Star Wars Saga Preservation” project index:
but is seems people still cannot access this, and nobody has done a similar 3D project since?
PsyKovic, have you found 3D Star Wars projects by other fans?