RE: Sig Somethin' Extra Build
Yes, It's an excellent flyer. Low rates are mild, high rates are wild. A real blast to fly. The biggest problem with a larger engine will be the clearance for a larger prop. Some people use larger aftermarket landing gear when they need the extra room. It's really not necessary to over power it that much, IMHO. Mine flew great with a Super Tigre .45 on it. Enjoy the build process as this is the other half of the hobby!