RE: Club FOX!
From what I read the Eagle engines are considered "Long Stroke" so are more for swinging larger props than all out screaming top end. You may find a larger diameter prop still comes out close. It's also true about the stock mufflers. However, if you have not caught them already there are several of us that have come up with better solutions for that one and can be found here with a bit of reading.
I too thought the numbers low for my new 60, but it was not anywhere near broken in yet and with that comes the warning if you have not read of my troubles.
Double check with Fox as to the max nitro content. Although there was nothing published in the instructions, I found my 15% was high enough to burn the piston very quickly. I think the head button has been updated. Never hurts to confirm.