This speed topic was covered in the magazine "Sport Rider" October 2001 titled "No Limits--We Derestrict the Hayabusa and ZX-12R. Actually it is a series of articles.
The article found the stock Busa was 158.0 HP at 9750 and 98.4 at 7000. It is limited to 300 kph or 186.7 mph Using radar guns on stock bike, they posted 183.9 mph for the Busa and 185.6 for the ZX-12R. Using the TRE or equivalent they got 192.4 mph for the Busa and 190.2 for the ZX-12R with a slight tail wind. They did other runs under slightly conditions and modifications to both bikes and the ZX-12R was slightly faster.
Hope I got everything right, but you can read the article.