I took the rpm horsepower numbers on 100's starting at 5300 and ending at 7200 for a total of 20 numbers. The data did not carry that far but looking at the dyno chart it is very easy to interpet the last few numbers. At 7200 I gave it 480rwhp.
So I came up with an average of 492.75RWHP over a 1900 rpm range. You guys can tell I am impressed by how long this motor hung on.