i put mine in my sons Balsa USA D-VIII(Pic of engine is on the first page of this thread.)weighed 14 lbs.RTF.has a 84inch ws.flew it ok but it was underpowered and i wasnt comfortable with it.meaning there just wasnt enough reserve power for emergencys or windy conditions in my opion.ive since put a homy 30cc 2 ring on it and flys it at half throttle.it now weighs 14.5 lbs if i remember right but since i added a little heavier engine i was able to use a smaller battery pack and move it back from the nose to balance better.if you do try and run the poulan dont make it real nose heavy and be ready just in case its underpowered.maybe yours performs better than mine did also.hope this helps.