Have the Evo 46......it's such a good little engine with the OS type F plug I went and took the plunge on the EVO 40GX gasser for my big Mustang. Buddy has the 40GX on a TF giant P-40 and it is sweeeeeet. Runs perfect starts first flip every time.

Now the little 46 is on a Neptune sea plane copy and it works great....only problem with that plane was the tank split once so the engine didn't run...then again the fuel was gone so go figure.

10X6 prop Byrons 15% premium fuel. Flies it at 6000 feet no problem.