Are all these 80cc ( 66cc, I have seen the math problem ), Chinese kits the same. I see them in all the ads and on EBAY from $120.00 with shipping, up to $200.00 or more and they all look the same. Maybe I haven't found the right thread in here, to read the differences. Anyway I'm new and looking to get into it, any help would be appreciated. Good ones, bad ones, etc. Thanks.