I love my O.S. .50 SX's, very nice engines and have never let me down. Smooth, and full of power,they just need to be broken in Per the instructions, nice and rich for the ring. It would work great on your plane, and be great for other planes down the road where you will need some extra power i.e. more aerobatic, sport, or 3D, whatever your poison is. I have never had any problems with the Remote Needle on either of the 3 .50's I own. I prefer front mounted "old " style needle valves, but these are holding up. Most of my O.S. Engines are old FSR's, but the .50 SX is a great engine. If you can afford it, if not one of the Chinese .46's would work great. That is my vote........Good Luck.