ORIGINAL: FOShowNoClass

..... Just by looking, I think the .91/Dynamax will fit. It will be a heavy plane, but as we've seen people have flown some heavy versions of this. I'm always big on keeping it light. A K&B 7.5 CC and a Macs pipe is supposed to put out around 7 lbs of thrust. That's what I've heard anyway. If the plane is kept at around 10 lbs, which may or may not be possible, It should go very well. I think the .91 version will weigh 2 lbs more. High wing loading, but will fly no problem in my estimation. I'm guessing a .65 or .77 would be ideal. I'm no expert.

Will