Decided to try a cheap Chinese engine, all the reviews on the rcg 50cc engine from Hobby king were fairly positive. Recieved engine and it looked pretty good. Mounted it up in a older GP christen eagle, was all set to test run it today, went to install the sparkplug and it just slides in and out of the cylinder head. The hole wasn't even close to being tapped correctly. I'm not going to bother trying to find a solution through hobbyking, so I need to find a cylinder that will work on this thing. Any suggestions on what might work? Maybe a dl 50?

And yes, lesson learned. Never again.