If you kept the weight down to about 8lbs with the engine and planes weight combined you would probably have a decent flying sport plane but thats it.You could use a 6oz tank to keep the flying weight down.i had a poulan 25 i did and only had about 7-8 lbs thrust with a 16x6 mas wood prop.It was stock except i gutted the muffler.I first put it on my sons DVIII,1/4 scale balsa usa.weighed 11.25 lbs and did fly it but its a high wing and basic flat bottom,84 inch with lots wing area.i took it off and converted a 30cc homy and installed instead.hope this helps you a little about your decision.