kephas:
if I'm not mistaken rashad khalifa's group has a different quran too, because it didn't fit the number 19 theory.
Also their Qur'an has some stunningly weird "translations" of certain verses, which are wholly different from how everyone else - Muslim or non-Muslim - agrees those verses actually read. The Khalifa Qur'an is a "translation" like the Jehovah's Witness Bible is a "translation" of the Masoretic Text. It's easy to read but it can NEVER BE TRUSTED. Whereas I generally do trust Pickthall, Muhsin Khan, and Pooya Azdi; their deviations to the text are minimal, it's their footnotes and parentheses which might lead you wrong.
shootist:
Is the Koran the absolute word of God, conveyed to Mohammed through the angel Gabriel? Does it offend Islam to deny even one sentence contained in the Koran? Is the Koran the same for all sects of Islam?
Yes, yes, yes; but with some important asterisks. Here's one clearing-house to start your research on those asterisks -
http://www.answering-islam.org/Quran/Text/* Sunni ahadith note verses and even some suras which were taken out of the text ('lifted' was the term); and some of these are quoted in canonical collections. So, the variants are never quotable as Qur'anic, but they may be quotable in sermons and legal-rulings
as hadith. The verse-of-stoning is usually the example given. And then there are these:
http://answering-islam.org/Quran/Miracle/ubay.html* The first Shia remembered their own variants to the text. These variants tend to be starkly royalist and to support the wilaya(t) of 'Ali and of his bayt. A critical scholar on this topic was Sayyari; also Kafi, Ayyashi, and Qummi made note of these variants. The wilaya verses (there was even a whole sura called the Wilaya) are obvious forgeries. I'm less certain of the generally royalist verses / variants; the Umayyads could have used them too.
http://en.wikipedia.org/wiki/Surah_of_Wilaya_and_NuraynBut nowadays the Sunnis and Shia both seem embarrassed by these ancient records of variants. I would not recommend approaching an imam / mullah with them.