You are very unlikely to find any place that has that info. They are very protective of that info.
The 1000cc twins Hondas are putting out a little over 180rwhp in the AMA and from what little I've heard about the 1000cc fours(top teams) they are putting out in the mid 180s for rwhp. Those are approximates and will vary slightly depending on the track they are running.
The FXtreme team I was a mechanic on didn't even tell me alot about what rwhp the bikes made and they are friends of mine.