Look for the Japanese Laserdisc version on MySpleen. It is a true theatrical cut. I think Adywan's recreation is there, but it is based on the DVD with an HD broadcast to make corrections, and I know of one change that was unknown at the time that he didn't include.

Yes, there are no good versions of AOTC, but there is a bootleg on MySpleen.

While this site's DoubleOFive has a pretty comprehensive list of every change, no matter how significant to the OT, a great site with nice visuals and descriptions covering the biggest changes can be found here:

http://www.dvdactive.com/editorial/articles/star-wars-the-changes-part-four.html

This link is just for the PT, but the OT changes are easily found from there if you are interested.