I've been researching on some motor kits for the past week or so and have been wondering which one to get Mega Motors Silver 48cc Bicycle Engine Kit BikeBerry.com. or Flying Horse Silver Angle Fire 48cc Bicycle Engine Kit BikeBerry.com They both seem the exact same but by being on here i can tell that all motors look almost exactly alike but work differently. If neither of these models are good can anyone reference me to a good one?