I used to own a Hostetler Tripacer. It weighed about 37 lbs and was powered perfectly by a G-62 with stock exhaust. I was running a slightly cut down 26x8 Fiala prop, making it more or less a 25x8. Normal scale flying was at about 50% throttle.
The 206 is about the same size as the Tripacer so my guess is, that your G-62 is more than adequate.