Hey Deadeye: Good to see another Saito, they are sweetheart engines. I have a Saito 91 that started life in a Goldberg tiger 2 and worked great, this is a 40 size plane. My 91 recommends you break it in way rich, as in 5-turns open and do not run above 4000 rpm for the first 10 minutes. Mine did seem to take a long time to break in, seems it was over 2 gallons, don't quote me, but once it did there was no stopping it. It now lives in a tiger 60 and I still can find no complaints. I'm not sure on this but you will probably wan't to use about a 14x6 or bigger prop on it, that's what I am using on the 91 so you may wan't to go even bigger. I have also had this engine on a super sportster, and like the tiger 2 instead of moving the firewall back I mounted the elevator and rudder servos back in the tail to compensate for weight. Although it looked kind of funny because the engine stuck out the front of the plane about 2". You may be able to find more on Saito's web site. Happy flying Garry