Help me find Vans article about RV-9A maximum horsepower

[chaskuss]

Listers,
Some time back, Van wrote a very detailed article on why he specifies 160 hp as the maximum for the RV9 & 9A. The issue was related to true airspeed at altitude. I thought I had saved it to my hard drive, but alas I can not retrieve it. Can anyone direct me to it?
Charlie Kuss

[hecilopter]

under the RV-9 specs...

http://www.vansaircraft.com/pdf/hp_limts.pdf