Everyone here is talking just about 3D stuff and a few on sport level but what about something along like running this engine on a pitts muffler and a GP P-51 Mustang behind it? I do have a magnum on a GP 40 Ultrasport and the plane is the fastest plane at my flying field so far but I wanna know what the 55ax will turn breathing thru a pits muffler either a bison or slimline so if there is anyone that has the 55ax on a pits muffler let me know what your numbers are doing. I have a picture of my mustang in my gallery if anyone wants to see.