Modeltech Extra 300 Nice But.....
A TT36 will be more than enough power! This little plane is great for the money - I put my Webra 40 Speed on it. talk about a wild ride!
I would not change the mounting pattern of the engine because the exhaust comes down the middle of the bottom of the fuse. Here's a pic of my setup, right before I sold it.
I just bought an OS 32 and contemplating getting another Extra for that. The Webra was fine but I feel a light, strong engine would be best suited to this airframe.
Regards,
swill