Keep in mind that the US 41 is a heavy engine. I have been this route before and lost a really nice warbird because I did'nt have enough extra "oomph" to get out of trouble. More is better than not enough and you can always throttle back to achieve scale like flight. I just ordered the GP Pitts and am going with a modified Air Hobbies 3.2 which will give me that extra something if and when I need it. While not as light as other 3.2's, I had Carr Precision custom build a new backplate mount and install a custom B&B muffler, Dave also twisted the carb so I could have a direct throttle linkage.

Happy Flying!

LOOPMAN