I got it done when they first offered it. Well worth it!
The whole guts basically were changed. The outside was the only thing that remained the same. I considered upgrading before the mod but I'm glad that I stuck with the Act III. All of the little quirks were eliminated with the upgrade. As far as availability, I don't think that the mod is around anymore. At the time, I remember only having a few months to do it. I would give Klipsch a call and see if you can do it. It is alot cheaper than buying something else of the same quality. Good luck!
The whole guts basically were changed. The outside was the only thing that remained the same. I considered upgrading before the mod but I'm glad that I stuck with the Act III. All of the little quirks were eliminated with the upgrade. As far as availability, I don't think that the mod is around anymore. At the time, I remember only having a few months to do it. I would give Klipsch a call and see if you can do it. It is alot cheaper than buying something else of the same quality. Good luck!