Thanks,
I'm glad I checked this forum out before I selected the engine. I just picked up the ARF from my local Hobbytown USA in Rockford, IL and was going to put a OS .46 in it but now I think I'll go with the OS .90 since it's basically the same size and weight of their .61 but with free horsepower and I can swing a 14" or 15"prop.

Is there sufficient ground clearance for larger props?

Does the 60 size two strokes fit inside the cowl without any cutting? If so then the 90 will be ok as well.

Beautiful plane, can't wait to fly it.