My Cranbrrok currently has a China Girl 2-stroke. I'm thinking I would rather have a 4-stroke motor. The bike has a rear sprocket already installed from the China Girl kit. I'm thinking a friction drive would be better and easier. I'll never ride it in the rain here in Arizona. I'd prefer a 49cc clone over a Honda since it's cheaper. The friction kit has no sprocket or chain, so it should be less problematic I'm assuming? Thoughts? Thanks!!!!