582 to 912 questions in Kitfox IV 109jb Posted 29 minutes ago I don't know where you are located, but I have a Fat Avid with a 912 in good flying condition. My friend's MKIV with 912 out performs mine considerably and mine is no slouch.If you are in the area (Tri Cities, Washington State) I'd be happy to take you for a ride and you could see for yourself before committing to the conversion. My friend with the 912 MKIV would also be happy for you to test drive.Thanks. I'm actually just looking toward the future for my 1050. I have access to a Kitfox IV 1200 that has an 80 hp 912 up front, and have actually flown it a couple times. I know that the performance isn't an issue. It is really a matter of weight gain because with my current useful load I can take 2 guys my size (a little too fat), 1/2 fuel, and no baggage, and I wanted to know how much a 912 conversion would eat into that. With that said, from what I have read, there were only a few modifications that were done to the airframe to raise the gross weight to 1200 lbs. I am considering one of 2 routes toward raising my airplane's max gross weight to 1200 lbs legally. If I do it then the weight gain would not be a big issue at all.