Hi, I'm new to motor biking. I've ridden bicycles all my life, even restored an old tandum and a few other bikes. I also rode motorcycles all my life. I recently bought a used kulana Moom Dog bike and want to put a motor on it. I came on this site so I might find some tips and such about the motor I need to put on it. I'm not sure if i want a 2 cycle or a 4 cycle. I want something fast.