ok...the only plane i've ever bought is a trainer and i realy never had a reason to buy my any other plane cuz my uncle has about 500 planes( not really for like a 100 but oh well) and he lets me fly them any time...but today a friend of mine gave me a biplane he was given and doesn't want to take the time to fix it back up and i kind of want a project so i'm gonna work on it...i was wondering how i would know what size motor is best to put in it...do i need to measure the wingspan and everything then come and ask you guys or what....any suggestions would be greatly appreciated....thanx