There is this reconstruction of the Special Edition for Episode VI: A New Hope called Harmy’s Star Wars Respecialized Edition which uses the theatrical DTS sound mix.
You can find that here
http://originaltrilogy.com/topic/Harmys-STAR-WARS-Respecialized-Edition-97-AVCHD-and-MKV-now-out/id/16682
Also, there are rips of the laserdisc releases for the Star Wars Trilogy Special Edition that you can find here:
http://originaltrilogy.com/topic/Star-Wars-Special-Edition-Trilogy-Japan-Laserdiscs/id/53489