Hello Humanbeing! I have the searched the forums and can't seem to find an answer, but thought you would know. I'm wondering if I would be able to install a new 67mm (CG250) cylinder and piston in my Lifan 197cc (CG200) motor.. You are an expert on these bikes. By the way, your advise on a new stator helped me out alot- I was able to get way more power from the 18 pole stator. Thank you!!!