Hey Shorty, I am putting a ST 75 in mine. I've heard the weight helps balance the plane and that it will pull the plane quite well. Hopefully I'll have it in the air soon, I just have to cover and glue the vert and horiz stabs in and hook up the pushrods. What colors are you going with? My 2yr old son loves sponge bob, so I did the wings yellow and the fuse black, I still have some stripping to do and find a little sponge bob to sit in the cockpit. I'll post some pics when its finished.