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kaled - 11:57 am on Jan 23, 2004 (gmt 0)
Provided you don't cloak for too long, I would be very surprised if anyone noticed given that the nature of the content will, presumably, remain unchanged. Kaled.
I should not really suggest this, but why not try cloaking for a couple of weeks. Deliver the old page to Google (and disable caching) and deliver the new page to users. If conversion rates improve, switch off the cloaking and use the new page. If the new page falls out of the index, you can revert to the old page (and try to work out why).