you can put this engine in the sukhoi. i had an 80" midwest extra with a fox 3.2 or 52cc engine and it flew beautifully. i am now flying a 35% cap with a 3w-140, and this plane recommended max is a 100cc. the key is to ensure your landing gear is long enough to accomodate the longer prop and the dimensions will jive from firewall to front of cowl.