Need a new engine!!

Well, my engine is shot. I could repair it, but I don't want to take the crank out to replace it. I'd be willing to trade even! Lol, Not sure why anyone would want a broken engine, but the offer is out there anyways. The screw holding the small drive sprocket has stripped, as well as the threading on the crank, which is why it needs to be replaced. I am looking for a replacement engine, for a good price. I'd prefer a 48cc, I haven't tried one yet, but my kit is a 70cc, so I'll take either. I'll buy either a kit, or just the engine. All I know is, I don't want to buy from a dealer, (full price) and I don't want to bother fixing this engine. It's been nothing but a pain in my butt. Break down after break down. I have the 70cc black stallion also, with a broken bearing for the piston. I'd trade both engines and a discounted price for a 48cc or 70cc engine. Any sellers?

Perhaps I will consider welding it to the casing, but I don't have a welder, so it may be a difficult task for me. I'd like to just buy a new engine, I'm really not happy with the amount of times this one breaks down. I've had every problem imaginable I think. Lol

bikeguy joe, you posted about an engine for sale, it's in my email, but not here, did you delete the post? I'm interested in your engine. Thanks.