I have a chance to get a lifan 100 for a deal. I have heard a lot of smack about motors that aren't honda...or RC 86 strokers Is this a waste of money, or will it perform a lot better than my stock 50 motor? Are they reliable. A friend said they were 5 or 6 horse. Thats a lot better than 2.5 horse stock. I'm looking for a little feedback, but i need it soon.