The closest thing you're going to get on the Vibrant is CyanogenMod. I think everything is working on the Vibrant (it is on the Cappy, minus battery issues), but I'm not sure. It's in release candidate stage, so it might not be what you're looking for, but it's as close as you're gonna get.
Here's the thread for the nightlies, but you can get the RC through the same method (it's about a week older than the nightlies).
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