The one I had was .60 sized which is why I went with the .91FS. The recommended engine was their .8? (.84, .86?)FS that is no longer made. I am not a believer of overpowering a plane, myself but I do go for the upper end of the recommended engine range of a plane.
ORIGINAL: Warjet
I have a Global P-47 that I've had for several years, flies great. Remember, this was a 46 size plane by design, but mine has the Magnum 61 in it and it goes pretty good. Another club member put a Magnum 75 in his, a real screamer. Another case of you never know..............