ORIGINAL: hgiles
My THunder TIger should be about as strong as a Saito 100, so I am hoping it is enough.
Your TT .91 will be underpowered with this plane. The supercharged YS .91 in the review puts out around 40% more power than the TT .91. This plane will end up around 11 lbs 9 oz with air retracts, so the TT .91 will fly it scale at best. The TT .91 is more suitable for planes weighing up to 10 lbs.