I actually got a chance to ask George what he used when we saw them at the TradeWinds on the Jersey shore when the album 1st came out. He was coming up from backstage and when I asked his reply was "We used a bunch of stuff for the record". My next question was I hear SLO in there? and he replied with "Oh yea, and a Marshall too". His "Oh Yea" comment was more like an "of course" rather than "oh, I remember" and he was walking past as we were talking so it was like a 30 second exchange for what its worth. LOL I do think the Marshall he was referring to was that modded one he raved about.
Funny cause that was the best sounding show I've heard him play live, and I remember our little exchange.. but I cant remember for the life of me what amps he used that night!!! Doh!! LOL