RE: Engine for Profile
No on so many levels, I don't know if I have that much time to type.
1- Weight
2- Mark motors, have not seen one that run that really was impressive. Average at best.
3-61's on 40 size profiles do not work unless the plane is 6 pounds. And if it's 6, you need a better plane.
4-Morris has done a great job of bringing profile planes to the market, however they have no idea how to set them up or fly them.
If the question was about putting that motor on a Stick, it would work great, for a profile, it is the wrong choice.
OS 55, 50, ST 51, Webra 50 are great profile/3D motors. All those are light and powerful.